Listed for a Short payment after paying account up

I am really not happy with the Service supp**** by RCS... I currently have a Makro account and i was listed for a short payment of R287 which i paid R300 on the 17-10-2015. i was notified once by RCS Via sms and upon calling them i notified them that i am unable to view what i need to pay as i do not receive statements from them at all. They apologised and informed me that there was a short payment of R287 outstanding, which i then paid R300. I contacted them and asked if they had received this and they informed me that it would take +- 1 - 2 days to reflect. In the Interim i app**** elsewhere and was informed that i have recently been listed through RCS. Once again i called RCS and was informed that my account is not in Arrears and that i can use my account upon requesting why i was listed i get informed that i was short by an amount, i then requested a letter to state that my account is paid up to date and that it is no longer in arrears and i then receive every excuse in the books to try and avoid my question and then get told to hang on for admin and after 30 min of holding on the phone gets picked up and then dropped in my ear. I WANT THIS RESOLVED A.S.A.P