Telkom Mobile terrible service !!!

I have been a telkom customer for a few years now, and I am extremely unhappy these days. For the past 2 months I am getting charged more than a R1000.00 extra on my telkom account, for something I am not doing wrong, I am sick of fighting and phoning telkom, I get NO WHERE!!! the staff are super unfriendly and they are not willing to help at all.. I cant afford to pay this EXTRA on my account every month, when I already have 4 contracts with telkom. I phone in and ask for assistance, then I get told I need to tell them exactly what time, date and who i spoke to before they can assist me with this issue!! I find that ridiculous as what normal person writes down the exact time etc of conversation!! I dont know how to take this further, when I reverse the debit order they double it. Please if anyone can assist with this, I dont know what to do anymore.