POOR SERVICE FROM RCS

At the beginning of August, I have paid up my RCS credit card and was issued with a paid up letter and I also requested that my ITC record be updated, that has not happened. I was advised at the time that it would take up to 21 days and now it is past 21 days and the credit card still shows on my ITC record as unpaid. I did report this prior to this and I have received no communication from RCS. I want this removed from my ITC ASAP as I am trying to purchase a car and this is proving to be an issue.