Just got off the phone with this guy. I upset him enough that he hung up on me.
I'd seen the number a few times, but they never caught me at home until today. The guy claimed to be with "Financial Freedom Now" or something, offering to reduce my credit card interest for Visa or MasterCard. I'm in Canada and he said they were located in Miami and had a branch in Ontario. When I asked where in Ontario, he would only say "Ontario". Hahahaha.
He wanted to confirm my credit cards and other info, so I told him to tell me my info and I'd confirm it for him. The address he had for me was about 10 years old.
Eventually, he didn't like my line of questioning and laughing at him, so he hung up on me.
Scam.