Who called from 2402527109

This number keeps calling me. Never leaves a message, and when I try to call back I can't get them. So annoying

Just got this call on my cell phone. Had gotten it on the landline in past. No message. I blocked it in both phones.

Answered a call from 240-512-5108. It was an automated call for a "Florida getaway" and I hung up.  Fifteen seconds later, a call came in from 240-252-7109 which I did not answer.  They did not leave a message.

Answered..no response, called back only to receive a busy signal.

Keep calling, sell auto insurance? Telemarketers for sure.