Dupllicated Billing

On the 08th June I bought pairs of shoes that were on a buy 1 get 1 free sale using my Edgars account at an Edgars store in Sandton. the on the 12th June I went back to exchange some of them and also returned 1 pair. On the 1st of August I settled the outstanding balance on my account. Then August statement came and the balance was -17c. I am surprised now that September statement shows that I owe R270.02. I have not used my account ever since I have paid off.<br> <br> I then went to the store to enquire, they called the head office for clarification and they just said that It's a reverse duplicate credit note and I should pay it as the cashier who helped me the last time I returned staff credited back the merchandise twice. My problem is why didn't't they pick up the mistake earlier and waited for three months to pick up the error.<br> I also did not notice any thing unusual on my billing it was the way I expected it and now why should I pay for their negligence as I really do not have Edgars on my monthly expenses.<br> <br> I have lost confidence in their services, can they please close the account.<br> <br> <br> I would really appreciate your help in this.<br> <br> Yours faithfully<br> Maria M Maringa