Close my RCS account !!!

Good day I am getting frustrated with this process. I have been to one of your stores to make a payment of the settlement, I have been told that my card RCS card is not working, none of your stores are willing to assist. I have been to a game store and was advised that the card is working perfectly fine. Please assist urgently as this is now unacceptable. Next thing you tell me that the settlement amount is only valid for 5 days when it is your stores that are dragging the process and failing to accept payment and close my account.