This is a fax machine trying to call a cell phone number.

This number seems to be a fax number. They called my work number about 10 times causing 10 messages in my voicemail box that consisted of a buzzing noise.

I have received 10 calls today from this fax #.  I sent them a fax after the first set of calls and asked them to stop sending to my cell number.  It did no good as they sent another round of faxes.

I have received about 10 calls from this phone number. It seems to be a fax number. The calls have been coming every 2 or 3 minutes.