CREDIT STILL NOT DONE

I have had a Credit outstanding from 2 April. Phoned 7th and 10th April and got told different stories as to why it wasn't done and different stories about when it will be done. I phoned on Monday 13th April. waited almost 50 mins to get to an operator. I told him about my problem and he said that all he could do was send the billing department an email expressing my impatience. I tried phoning again today, Thursday 16 April. I was cut off 7 times while waiting for an operator and on the phone for 2 hours, I finally got through to someone. He informed that my credit was sent for approval on 15 April and would take 7 working days. I asked him to make note on my account to express my outrage about this shocking service and all for a R79 credit!!!! I wasted R400 airtime that i could have used for something else more important. This is absolutely unacceptable service from MTN!