Can someone please help me

I was billed incorrectly and logged a case on the 4th of dec. My money was deducted on the 25th dec and I got a call from ur billing department and spoke to ThembaSambo who advised me to reverse my money at my bank and make a manuel payment of R215 as he will credit the other money on my next invoice. On the 3rd of jan I logged another case as this was never done. Yesterday on the 12th of jan I got a msg to say my account is in arrears and that they will suspend it in the next 48 hours which is tomorrow. This problem is still not sorted and this is really poor service. I am really getting sick and tired of Telkom just doing what they want and messing me around. This has gone too far as I am having to endure this **** service each and every month and no one is bothered This problem has still not been attended to. On the 15.01.2015 a full amount of R936.50 was deducted from my bank account. Who gave them permission to deduct money from my bank account without my authority. My debit order date is on the 25th of each month, so why did they debit my money on the 15th of Jan. I dont even owe them that amount. I am really getting sick and tired of Telkom who just dont care about clients