Unsolicited Calls

I receive calls from "Card Services" probably 2 or 3 times a week. Like others have been unable to speak to supervisor, etc.
My only relationship with them is through Choice Privilleges Visa credit card (Card Services handles their billing etc.)
I contacted Choice Visa and they were familiar with the complaint, they have agreed to remove my phone number from their records and list me as do not contact by phone, they promise this will stop the calls. I'll give it 60 day and if they don't stop, I'll cancel the credit card to sever the relationship.