Who called from 2132051233

I've been getting calls from this and a similar number. They never leave a message, and if I answer, it's a beep, then a hangup. I used to have MetroPCS. If I call back it just rings forever or I get a recording about invalid selection or number. The area code is for California.

I answer a lot of stuff on craigslist, possibly a dpam number, I also have metro pcs

yup.  my wife and I do.  both got the call from this number within about 20 minutes.

They called me this am speaking Spanish. Don't understand Spanish. Don't know how they got my number.

Same here this morning in NC. Speaking Spanish. I even have my # on the do not call registry.