Who called from 8013706000

over 300 calls in one day

keeps calling one of our extensions all day for the past month and hangs up

Online Fax company - said one of their customers was trying to fax me.  They blocked my number in their system and the calls stopped.

Fax calling my business phone

THEY KEEP CALLING MY NUMBER. IT SEEMS LIKE THEY ARE TRYING TO SEND A FAX. I DON'T KNOW IF THIS IS A REAL COMPANY OR A PERSON OR THEY ARE TRYING TO MAKE ME CALL THE NUMBER  FOR A REASON.IN ANY EVENT THEY ARE BARKING AT THE WRING TREE.