having same trouble - lots of phone calls that give a fax noise when answered - keep calling my business 800 number!! very annoying

This number, and a string of others, has called us multiple times.  No fax, no one on the phone, no way to look them up or ask them to stop calling.  Filing a Junk Fax 1088 Form with the FCC, recommend you do so as well.

https://esupport.fcc.gov/form1088/consumer.do?form_page=1088A