Persistent fax to a non-fax line. Here's what I did: Print "STOP" in huge, bold typeface on over 100 pages... and fax it back to them - the number is to a fax line. Choose whatever message you want, and spam their fax line, hundreds of pages at a time. I will be sending this fax several times a day, every single day until the calling stops. I recommend others do the same.
(after 3 days of faxing) I faxed total over 300 pages and it WORKED!! I received a phone call from a real person asking for a fax number to reach "so-and-so" (wrong number). I googled the phone number that called [ 800-711-4555 ], it came up as United Health Care trying to fax over a "Medication Prior Authorization Request Form". I advised the caller of what was going on and she confirmed that it is UCH auto fax system. I have not received any more calls! ^_^