MTN is useless!

On Tuesday the 25th I attempted to purchase a all net bundle for R500 - as I purchased it a error popped up saying "the system is offline, try again in 15min" but the R500 had already been deducted off my account. I then called the call center not once but 3 times being told it would take time to reflect on my phone. I then called again to get told they can finally see the error and would esculate it ( this was between 7-8 in the morning of the 25th of June) and it wouldn't take more than 2 hours to rectify, fine I left it at that. On the 26th of June I called back to be told that my query was only esculated at 18:00 on the 25th and I must wait 24 hours for my query to be resolved. Today the 27th at 7:30 I called back to be told it's still being esculated. This is unacceptable and I have lost R500, I rely on the all net minutes as I use my phone constantly!! I have had to use money I didn't budget on to make my calls now. I want this resolved today as well as compensated for using money I didn't budget on cause of a useless network provider or I will be taking this further!!!!!! My ref is SMC/***