I got a call and requested a supervisor. The sales person said there was no supervisor. I said I am on the DNC list and you are violating FCC law. (I made that up.) He said "Ma'am this IS the FCC". I said "You are claiming to be from the FCC?" and the man said "yes". That is ridiculous. Then he asked me if I had hummingbirds in my back yard. Nutty.
They keep robocalling my cell phone. Some company called "Cardholder Services". Lots of info if you search the company name on Google. Apparently they've been doing this for a long time.