Who called from 8132007690

This number was on my caller ID.  When I called it back, I got a recording asking me to input the call group to which I wanted calls forwarded to.

After numerous calls, I asked who was calling.   "Dr. Diabetic"!!   No diabetics in our household.
Telemarketer just fishing, I guess.  Very annoying at inconvenient times.   Caller uses English as a second language.  Cheap labor.

calls about twice a day.  never answer and hangs up when ans. machine goes on.  How do you rid these calls?

These type of people don"t have nothing better to do but bug you all through the night&day?

I get calls from this number about 4 times a day, every other day, at all hours of the day. I think the latest I've gotten a call from these guys is about 12am.
When I call them back I get an invalid phone number message. Haven't answered it yet, but I am on a do not call list.
Guess I'm going to have to let them have it.