Vista Card Services. It's an effin gas card program sales pitch that tries to tell you that you won a few hundred dollars in gas cards, then tries to sign you up for their rewards program. After joining, it's almost impossible to cancel.
Call back the number and you get a computer. press 2, enter your number and they "claim" to take you off the list. After that, report the number to donotcall.gov.
This Number has called me about 4 time today, just started getting these calls. They hang up as soon as the answering mach comes on. I also used a JCPenney Gift Card this last week. Looks like they have hacked into something concerning gift cards. I do not answer any calls anymore unless I recognize the number as I get so many of these calls.