Most contractors don't know. Let's find out.
These aren't guesses. This is what the data says about contractors and missed calls.
Real scenarios for real contractors. These numbers are conservative.

Your customers don't leave voicemails. They call the next contractor on Google.

Based on your numbers, you're leaving $57,600/year on the table from missed calls alone.
Even capturing a fraction of those calls changes your business. What would an extra $2,400/month mean for you?