incorrect billing

on the 7/11/2015 I deposited R1000 due to my debit order not going through, on the very same day you debited my account R829...Why did you do this and why was my account not credited for the overpayment?!!!!<br> Secondly....what is happening with my Box Office. I have only rented 3 movies this month and the amount is R275?? Why when I only rented 3 movies in March which is R90. On the 28th February it was R335, I most certainly did not rent 11.16 movies on Box Office during February. I demand an answer otherwise I will take this matter further. I have emailed my bank statements to enquiries. This is not the first time that my account has gone belly up!!! <br>