In sales/marketing language: it allows companies to boost their sales & ROI, reduce advertising budget wastage and optimise their teams performance on the phone by tracking inbound phone calls from their customers.
I'm sorry to be so blunt, but if that's your elevator pitch, well, right there is your problem.
What is call tracking? It lets you track statistics and recordings of inbound phone calls (usually from your customers) so that you can identify trends, strengths, weaknesses and understand the performance of your sales and marketing campaigns.
Time of day, day of week, failed calls, total calls, caller id, caller country, call duration, hangup reason - all these stats and more are available.
I had this issue and my conversion went way higher once I made my copy for my user instead of for my product.
Good luck! Your product looks amazing.