RCS Accounts department is usless

I Have changed my back account and needed to set up a new debit order. I was not able to do so as it was towards the end of the month and would have to set up the debit order in the new month. I received my statement from RCS stating the amount needed to pay. i made an eft payment into RCS Groups account. the amount i paid was R966,00. this payment was made on the 2nd of November. i receive calls from RCS on a daily basis saying my account is in arrears. i explained to the consultant that i did make a manual payment as i have changed banks. it is now the 13th of December. i have sent *** my proof of payment 20 times already and they still continue to tell me my account is in arrears. i have set up a new debit order which seems to be fine but they cant seem to update my account to correct it with the R966,00 which i have paid. i am absolutely peed off with RCS as it does not seem like their accounts department knows what they are doing. they are a finacial service provider and they cant seem to sort out one finacial issue regarding my payment. Pull up your socks RCS Staff. i am letting the world know about the terrible service RCS gives and how they are not able to solve a simple problem.