ACCOUNT PAID UP & CLOSED YET STILL BEING BILLED.

RCS - What a bad and unprofessional Company this is. We have made 2 very last Payments on the 4 May upon receiving our settlement letter. We were asked to call in 2 days later to confirm payments was refused which the lady confirmed it has and she had put a block on the account so no unnecessary charges can be added knowing we asked for the account to be closed up and finished. The 12th May we received a RCS letter confirming out Account is Cleared and no money owing and the account is closed... All this being said and done, this is on a mail and letter of attachment we received and knew its been closed up and sorted, only to receive end of the day on the same day 12th May a Statement saying we owing a R54 on our account. How the Hell is this possible??? We call in for assistance and the lady had sent a mail through to who knows who as I did mention that this is ******* and ******** and this can cause serious trouble as we Have Paid Up Full and a little more than the Settlement Amount, we have received the Letter of the Account Closure and Our Account has no monies outstanding. Now you want to keep charging me fees? Even though my account has been blocked. Please get someone with some sort of knowledge of dealing with this matter to be resolved Immediately as this is very unacceptable in every way possible.