I have received many calls from this "business" along with many other people.
Here are a few of the websites listing complaints about the company.
http://complaintwire.org/complaint/xogBAAAAAAA/card-services
http://honeypot.net/2007/10/24/scam-calls-card-services/
Like many others I am on the donotcall list yet I receive at least one call a week and up to two calls a day. All calls use the same automated message.
The automated message says something like lower your interest rate ect. Press "1" to speak to a specialist or "3" to be removed from our calling list.
I have tried the remove option many times and still receive calls from them. Every time I tried to talk to them they either hung up or were rude.
Some others have had money taken due to giving them personal info.