Who called from 2766445251

Keep getting calls from unknown number

This number calls me at least 3 or 4 times a day but never leaves a message. When I answer, they hang up. Really getting on my nerves.

Called me and I called back. University of Phoenix is who the number is associated with.

I called it back, it is Univ. of Phoenix. They was nice and removed our number. We Hope! LOL

Caller ID Shows:  WINDSTREAM 644-5251  Started calling me early this morning 7/8/15 at 814am.  They've now called me 7 times. They don't leave any messages.