By John Barrows | October 2026
The biggest cold calling mistake is trying to sell your product on the first call. The only thing a cold call has to sell is the next step, and almost every mistake on this list comes from losing sight of that. Here are the eight cold calling mistakes I see most often and how to fix each one.
1. Trying to sell your product instead of the next step
Most reps pick up the phone and try to explain everything their product does before the prospect has any reason to care. Nobody buys on a cold call. The best outcome you can get is another conversation, so that’s the only thing you should be selling.
That’s why I teach cold calls using AIDA, which stands for Attention, Interest, Desire and Action. Each stage of the call has one job, and each one moves the prospect a step closer to agreeing to a next meeting. Mistakes 2 through 4 break down where reps go wrong in each stage.
2. Winging the first 15 seconds
You have about 5 to 15 seconds to earn someone’s attention on a cold call, which is why your intro matters more than most people think. Most reps use the same opener for years without ever testing whether it works.
Use AI here. Ask it for 10 different ways to introduce yourself on a cold call to your target persona, pick the two you like best, and A/B test them. Track which one gets you into another conversation more often and keep refining from there.
3. Calling without a reason that matters to them
Once you have their attention, the Interest stage is the reason for your call. It needs to be specific, and most importantly it needs to be relevant to the person you’re calling, ideally focused on a problem or challenge they have that you can solve.
A legitimate reason for the call usually comes from one of three places:
- Relevance. You’ve worked with people in similar roles and solved problems they’re likely dealing with too.
- Personalization. Something you read about them, or something they posted on social.
- A trigger event. Something that changed at their company, on their website or in their market that makes your call timely.
4. Pitching instead of asking questions
Desire is where you ask a few questions to understand their situation and get them even more interested in solving the problem. Reps skip this stage and start listing features, and the prospect checks out because nothing said so far is about them.
Two or three good, relevant questions do more work than a five-minute pitch. The answers tell you whether there’s a problem worth a next meeting, and they give the prospect a reason to want one. From there, Action is your call to action. Know exactly what you’re asking for before you dial, and ask for it clearly.
5. Leaving voicemails to get a callback
If a callback is how you measure a voicemail, you’ll decide voicemails don’t work, because very few prospects call back. The point of a voicemail is to create an impression point.
Instead of starting the voicemail with your name and company name, start with the reason for your call and leave your name and contact information at the end so it’s the last thing they hear. This way you’re basically forcing them to listen to the value proposition before they find out who it is. Even better, use the voicemail as a double tap and let them know you sent them an email or a LinkedIn InMail, so each touch reinforces the other.
6. Sprinkling calls throughout the day
Making a call here and there between meetings and emails kills your momentum, and three calls spread across eight hours won’t teach you anything about what’s working.
Schedule power hours instead. Block the time, protect it, and make your calls back to back so you get into a rhythm and can adjust your approach from one call to the next.
7. Bringing a generic list to your power hour
Power hours only work if the list is right. The problem is that most reps show up with a generic list and call anybody and everybody on it. I’m not smart enough to have a relevant, good conversation with a different title in a different industry on every single call.
Pick one persona in one industry for each power hour. That focus lets you build a strong value proposition, two or three questions that matter to that persona, and maybe even a case study you can use to tell a story if you get them on the phone. By the tenth call, you sound like someone who understands their world, because you’ve spent the whole hour in it.
8. Trying to get past the gatekeeper instead of working with them
Everybody asks me for the best way to get through a gatekeeper, and they’re usually hoping for a technique or a trick. My answer is to have a legitimate reason to reach out to the person you’re trying to connect with, built on relevance, personalization or a trigger event (see mistake 3).
Gatekeepers can also be a wealth of information. Go in with a plan to learn from them, whether that’s the best way to get on your prospect’s calendar or whether someone else in the company would be a better fit. The same holds true for AI gatekeepers. A clear, relevant reason for your call is what gets you through, whether a person or a machine answers.
The JB Sales approach to cold calling mistakes
Every cold call we teach in Filling the Funnel follows the same four stages:
- Attention. Earn it in the first 5 to 15 seconds with an intro you’ve tested.
- Interest. Give a specific reason for your call that’s relevant to the problems they have.
- Desire. Ask two or three questions that deepen their interest in solving it.
- Action. Ask for the next step you planned before you dialed.
Run those calls inside a focused power hour, one persona and one industry at a time, and back each one with an impression-point voicemail and a matching email or InMail. The full step-by-step process is in If You’re Going to Make Cold Calls, This Is How to Do It. Filling the Funnel teaches this framework to sales teams with AI built into each stage (learn.jbarrows.com/pages/team-packages).
Frequently asked questions
How long do you have to get someone’s attention on a cold call?
About 5 to 15 seconds. That’s why the intro matters so much, and why it’s worth testing two versions against each other instead of using the same opener forever. AI can give you a range of intros to choose from in a couple of minutes.
What should the goal of a cold call be?
The goal of a cold call is to sell the next step. Aim for a specific next conversation that fits what you learned on the call, and know what you’re asking for before you dial.
What’s the point of leaving a voicemail on a cold call?
A voicemail is an impression point. Leave your contact information at the end and use it to mention an email or InMail you’ve sent, so each touch makes the next one more familiar.
Should you make cold calls in blocks or throughout the day?
In blocks. Scheduled power hours let you build momentum and learn from call to call, especially when every call in the block goes to the same persona in the same industry.
How do you get through a gatekeeper on a cold call?
Have a legitimate reason to talk to the person you’re calling, based on relevance, personalization or a trigger event. Treat the gatekeeper as a source of information about the best way to reach your prospect, or about who else might be a better fit. The same approach works with AI gatekeepers.
John Barrows helps sales leaders decide whether to replace, rebuild, or retrain their sales team for the AI era, drawing on 25+ years working with Salesforce, LinkedIn, Google, Amazon, and Okta. He built the frameworks behind Filling the Funnel and Driving to Close, and today advises CROs and VPs of Sales on AI readiness, team restructuring, and go-to-market strategy. He is the host of Make It Happen Mondays (250+ episodes) and author of I Want to Be in Sales When I Grow Up.
