I do have a credit One account but I am solid on my payments every month, I pay more than the amount due because that is how to keep from paying high interest.
Curious this; clearly must be them; and it looks like a gimmick actually from a side biz to sell the service of clearing debts.
I always take it as sign it is a solicitor when no message is left.
I do the same thing, paying more every month than what is due and I am not ever late yet they continually call. I had to threaten them with calling an attorney to make them stop.