In sales, there's a fine line between persistence and stalking. In my experience, with the exception of prospects who are already in the sales cycle, that line is usually drawn at about once every 6 weeks. So given that you only have once every 6 weeks to make a direct impression on your "B" and "C" list prospects, how can you make sure those follow-up calls have the greatest possible impact?

Let's go back to the science of sales, and dissect a typical opening call that I hear 80% of the time when I'm coaching sales people:

"Hi Mary, this is Colleen from Engage Selling. How are you today? Great. I'm just calling to check in and see if anything has changed since the last time we spoke?"

Did you spot what's wrong with this opener - and why? I see at least three big mistakes, any one of which could cost you a potential sale.

Mistake #1: "How are you today?"

Please, please, please never use an opening statement that starts with "how are you today!" Why? Because all it does is remind your customers of all those dinnertime calls they receive from telemarketers. Are you a telemarketer? I didn't think so. So don't act like one!

Besides, do you really believe that your customers actually think that you are even listening to the answer? Are you listening to the answer? Of course not. So remember: your prospects see through this opening question just as easily as you do whenever a telemarketer (or less professional salesperson) calls you.

Instead, try this rapport-winning phrase: "Did I catch you at a bad time?" This works well because it points out the obvious, and that makes the customer laugh. Of course it's a bad time! Any non-scheduled call is an interruption, and no interruption ever comes at a "good" time. After all, if all your customers spent their days just waiting at their desk for you to call, then sales would be too easy!

Mistake #2: "I'm just calling to check in and