A man called from this number regarding a credit card debt from 2000 for someone else. I don't know how he got my number or why he has called me. When I called back and told him to take my number off his list, he demanded to know if I was asking him or telling him. I said, "I'm telling you!" He replied "Because if you knew who I was, you would be asking, not telling." So I said again that I was telling him not to call me again, and he started talking over me, loudly and in a threatening tone. I hung up.