I've been getting these sales calls from spoofed phone numbers, the most recent of which are 904-398-4657, 506-222-44423, 506-228-14310, 506-227-53860, 506-222-90344, and 506-224-00908.
I finally tracked down the call center making these calls, and managed to get all the way up to the home office. If you've gotten a "Heather from Card Services" call (especially if you're on the Do Not Call list), here is the company to go after:
Dynamic Financial USA, Inc.
4370 La Jolla Village Drive, Suite 400
San Diego, CA 92122
I've already filed my FTC and state complaints. If you've gotten such a call, I suggest you do the same at
http://www.donotcall.gov