I have the same thing. If you answer they just hang up but they keep calling. Scared me half to death because I thought it was some weirdo, kinda relieved that it's not just me! Seriously they could be scaring the crap out of people.
"Vince" called and asked if I had more than $4000.00 in debt. I immediately said I wasn't interested and to take my name off the list. He then replied that it wasn't a solicitation or sales call and that he was going to continue to call me over and over and over. Very obnoxious when I don't even have any debt!
Clearly, if there is an internet page committed to this number, it is the source of fraud, scams, or some other type BAD crap. Just block the number. Look it up in your manual for your phone, or on the web, and block the number...