I don't know how many times I have received these calls from the same outfit.   I have asked repeatedly to be removed and it does not happen.   I have complained to the so-called Do Not Call list and that does no good. The Justice Department is probably as ineffective as their Do Not Call list, so it must be owned by Card Holders Services, and perhaps Rachel herself.
So much for our elected officials AND any department set up by them.

This WORKS - it's FREE ...

Call Blocking software
www.phonetray.com/phonetrayfree.htm

Whoever these people are they call almost every day. It starts off with a recording telling you, you are eligible for a lower interest rate on your credit card. We do NOT need a lower credit rate since we do not have balances on one. At first I would just hang up but the last few times I thought you know I'm tired of this. The only option they give you is #1 and it's to talk to someone about lowering your interest rate. So when I get a person I ask them nicely to remove my number, they hang up on me. Another number they use is 202-367-9951. I'm sure there are others but I've now erased them. They are just a big pain in the neck.

This number 207-493-2647 showed up as Caribou Meats on my caller I.D. When you call back, the line is busy. You can turn them in to the FBI

Identical to:  http://800notes.com/Phone.aspx/1-501-321-4569

Same BS message, Same style of using a completely fake number that is neither toll free nor out of area to prevent call blocking equipment from rejecting the incoming call, and to make it more likely for you to pick up.

It is very important to file an FCC complaint anytime you receive calls like this.  If enough complaints are registered, eventually these calls may stop.

https://esupport.fcc.gov/ccmsforms/form1088.action