RCS Refuses to close paidup accounts

On the 10th October 2017 i requested settle amounts on my CTM & Builders accounts as i wanted to settle my accounts and close it. I received and paid the settlement amounts with the understanding that the payment will only reflect on the system after 5 working days and then i need to contact RCS to close the accounts. Today i have contacted RCS and was advised that : - 1. The said accounts can only be closed after 36 working days?????? 2. I need to provide proof of payment on the CTM account which was overpaid to the amount of R297.88. I have the choice of "buying" anything for the overpaid amount or wait for a refund which can take up to 36 working days. RCS, i need my money or i will add interest of 10% to the amount overpaid!