Who called from 2697682735

I had a missed call from this number an hour ago, I called it back and it said the number was "invalid."

I receive phone calls from this number every few days.  No voice message is left.  When I tried calling back the number, a message state the number is invalid.

They just called me.  They are war dialing everyone...

They called me like 5 times already...i also called back and it said invalid

they call daily and we're on the "do not call list." grrrrrr. so frustrating. the ph# is invalid when we dial it back.