I recieve calls frequently from this scam.

I receive unwanted calls frequently from the same phone #.  I remained on the line and spoke with someone requesting my credit card # in order to lower my monthly interest rate.  I asked what the company name was and was told it is "Credit Card Services".  I told him I was going to google their company before I could give him any information.  Conveniently the call disconnected.  Furthermore I don't even have a credit card.  I wish these phone calls would stop.  I don't have time for them.  Thanks