Who called from 5742136230

Didn't answer!

Said it was "unknown name"  so I let the answering machine get it.  No message left.

They just called me. Do you know what it's about?

Same thing.  Unknown name and no message.

I grabbed it, expecting it to be IMPORTANT, like from my dr., NO, it said I was chosen for something, I hung up. ANOTHER ANNOYING call.