TERRIBLE SERVICE - THE WORST!! - MTN

Received sms's from MTN every single day, stating that I am due for an upgrade. Went to the store, just to be told, no, it will be an early upgrade. Told them, I am not interested. She advised that we will be able to able normally in 2 weeks time. 3 Weeks later, I returned, and confirming with her, not once or twice, but multiple times, that I don't want an early upgrade. She assured me that it is not early. I made a slight change on my package, which would have resulted in a R120 difference per month, but to my complete surprise, they debited more than R1200 extra from my bank!!! The staff at the MTN store close to my home, is so ***********, they can't give me a straight answer. I have logged a complaint on MTN's customer care email,,,,, guess what.... they don't care .... did not even receive acknowledgement of my email. I finally managed to get a full invoice, but that does not help at all.... the invoicing is so messed up, no one can figure out what is going on there. I am so sick and tired of MTN! For that matter... all the Cellphone companies are *****ing from us. Never experienced such terrible service. Never had problems with Nashua Mobile, but eversince MTN took it over, it is a complete MESS!!!