I have had several calls lately from this number. When I answer, they say nothing and then hang up. They just called again. I don't answer their calls. I am very concerned about how they got my # and quite releaved that my address is not listed with my #. I used to be a collector. If this truely was a collector, they would already have your social security #, from the company who is trying to collect the debt. This is definately a scam.