Who called from 2132051233

I keep getting calls from this number when I call back it says it's an invalid number

I want to know who this is and how did it get mine and my wifes number

Does anyone else have metro pcs

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