MTN does NOTHING

MTN simply ignores a customer who has been hacked and de*****ed of money. I have a contract and I pay by debit order -R260 a month. But on 17th November last year I received an account for R8860. I nearly fainted. This was made up of 3 "self service" purchases for R7414 and 3 "me2 you" for R30, I have no idea what these are. I had obviously been hacked and immediately wrote to the ***** Department ( you cannot phone them,) NO response at all. Once I had an email saying she was out of office.. another time they told me my case was now closed! Finally I went to Thomas, the very helpful manager at MTN in Constantia and said he would speak to the ***** department directly for me. I had to get an affidavit from the police and printed out my original invoice PLUS all the emails I had previously dropped into the black hole of their ***** department. He sent it to them STILL NOTHING! I have had to do a "reverse charge every month on the 7th which is when my account falls due.. to do this I have to pay R30 to the bank. They cut my phone off once but then noticed there was a query next to my name so re connected me. A query doesn't do it! I need MTN ***** department to do something..., respond to me and apologise for causing me sleepless nights and so much worry.