BILLING ***** AT MTN ??

My account is the same every month, this month I get a reminder after 4 days that my account has been placed on hold, as it is 4 times what is usually is, I queried it, BM said I must wait for the end of the month, I asked for itemized billing, they said they cant give it to me, asked to change packages to a capped package, they said I cant, website says I can. Asked for explanation, they gave me a run around, sales lady said if I am unhappy, best is to cancel contract and move to Vodacom, by that time the BM had retreated. POOR service and NO answers for what I suspect is billing *****, reported it on MTN website, no answer. MTN will take your cash as they please and give NO reason to you as to why they are doing it. Worst service I have EVER received from anyone. Went to MTN La Lucia as well, they just say they cant do anything. Is MTN service providers really so useless that they cant do anything except sell you a handset? If MTN can prove I played too much, cool, my bad, I will pay and get on with my life, but they REFUSE to furnish proof. while in store 4 other clients got same treatment. PATHETIC !!