Who called from 7168599500

I HAVE BEEN RECEIVING CALLS ALL DAY FROM 716-859-9500 AND 716-859-9501- IT SOUNDS LIKE THEY ARE TRYING TO SEND A FAX- THEY HANG UP WHEN THE ANSWERING MACHINE GOES ON- CALLED BOTH NUMBERS ?? NO ANSWER- HOW DO I FIND OUT WHO-AND HOW DO I STOP IT ??

We are getting repeated calls (10 in about 20 mins) from 716-859-9500. Only beeping when answered and sounds like a fax when called back

I too get numerous calls on my car phone from this number ,the who and why I do not know, pain in the butt