Heather sounds like a real person, but it's a recording and I got this call (Maryland number) which I pretty much figured it was a scam before I picked up and said hello. I did it anyway just in case a friend from Maryland was trying to contact me or something. HA!
I only have one credit card and if there was an issue they would email me or call me directly. Not from some third party company that calls you with a recording and doesn't really say who they are. "Accounting Services" such a generic name.