I just called the number back and it said to leave a message with my phone number so they can take you off their do not call list. I didn't leave my number. Hopefully they will get the hint to stop calling when I don't answer the phone.
Keep getting calls from this number, finally decided to answer today. They asked for my "fake" name that I use when I sign up on websites for freebies, coupons, etc. They didn't say what company they were with.
I've been getting these nuisance calls from this number for a week, several calls a day. I just filed an FTC complaint against them. I'm on the DNC list and they aren't leaving messages or identifying themselves as bill collectors, a non-profit charity, or a political party so I am assuming they are a telemarketer.