Who called from 5752080309

They've been calling nearly every day trying to sell me warranty coverage for a car I sold over 2 years ago.
Most likely scammers.

Number keeps calling; never leaves a message; tried to call back and get the number doesn't work message.  Obviously scammers.

I've received calls from this number multiple times, but it's a dead line when I answer.

I just started getting calls from this number.  Dead line when I answer.  No answer when I call back.

Continuous calls from this number after repeatedly informing them of no interest in car warranty they offer.