Box office refund x 2 not done

I hired a movie on 6th September which didn't work. I called immediately and was told that I will he refunded the R30 charged. I then rented the same movie again on 16th September and it still didn't work. The sms received showed that the fee for the 6th was not refunded. I called again and was given a long story by the consultant. I explained that the movie still didn't work and I was charged twice so I needed to be refunded R60. The consultant promised to get his supervisor to call which didn't happen. I rented a movie today (23 September) and to my horror the account hasn't been corrected. I called back and had to explain my whole story to Robert who was most unhelpful. I then asked to speak to his supervisor and he put me on hold indefinitely giving me no choice but to put the phone down. Although he had all of my details nobody bothered to call me back. This is totally unacceptable. Multichoice just increases fees as and when they feel like it but when it comes to correcting clients accounts it doesn't happen. My debit order goes off on the 28th and this amount will just be deducted although it is the incorrect amount.