Same. Says they are credit card services and can give me a lower interest rate. They called me from another number two days ago and when I called that number back it was not a valid number. Scam
Same story they wanted to lower my credit card intrest rate and hung up when I told them I dont have a credit card, and asked how they got my number. If they keep calling you, it can be considered harassment and I would threaten to take legal action.