Shockingly bad service

I received a SMS to say that my bill would be over R10 000 this month. I went in to ask why and was just told that I can ask for itemized billing but I would be charged for every month that I want it. Even if I pay for it, I will only receive feedback in 2 weeks time!! When I asked for the data to be capped in order not to receive a bill like this one again, I was just told that they will not capp it. If i want to capp my data I have to upgrade my contract (expiring the end of January). With service like this I have no desire whatsoever to renew or upgrade any contract with MTN ever again!!!!