Who called from 4079756531

These boneheads tried calling my cellphone.  Who is this?  I don't know anyone in Orlando, FL.

This person/company calls often but doesn't leave a message.

Immediately after the 407-975-6531 call I get another call from the Winter Park, FL area from the number 407-539-0445 with the Caller ID saying T Richardson.

Got a call on my cell phone from this number 407-975-6531 from Winter Park, FL and then immediately after got another call from 407-539-0445 and it says it is T. Richardson from Winter Park, FL.  I'd like to know how they got ahold of my cell phone number.

They left a message with me. It's Verizon calling about a DigSafe ticket, telling me they didn't have any buried cable in my yard.