Who called from 7813961700

this number keeps calling and when i call back there is no service

One Click Online Yellow Pages.  They call from different phone numbers.  They also call from 276-346-3496.  They are really annoying.

One Click has called me from 4 different numbers and I keep telling them not to call.  My phone has caller blocking.  I block one number and they call from another.

call constantly.   Pickup....dead air...then it disconnects.

2 hang-ups today.  Said, "Pantera, Corp" on display. Pantera Corp at 33 Ship Ave Medford MA, 2155 (781)396-1700.  Woman says, hello, and hangs up on answering machine which all they will EVER talk to.
Why is a roofing contractor in Massachusetts bothering So Cal?