Edgars Acounts & RCS

Since Edgars accounts has been taken over by RCS and I had previously had absolutely pathetic service from RCS I contacted the account departments and requested a closing balance. On the 28 September @ 09:57 I received and SMS stating my balance was R2340.23 which was valid for 5 days and payable by 3 October. I made the full payment on 28 September @ 18:22. On 2 October I received another SMS stating I now owe an amount of R99.94. I queried this via email the same day with the account dept and mentioned that I will not be paying this since I have already made full payment. Today (14 October) I received another email stating I now owe them R205.04. Edgars and RCS please get your act together as I will not be paying you one more cent!!

Is there anyone that can resolve this???