Telkom horrible service

I have had the most horrible experience with my cellphone ontract with Telkom sa. The contract came to an end 3 months ago. I called and the agent informed me that I can continue using the benefits and not pay for the phone. And gave me an out of R144 that I was going to pay each month. I was happy with the deal so I decided to continue. End of may I was debit the R144 which was agreed upon and an addition of R301.75. I then queried the unknown amount via the call centre. None of the call center agents could explain that amount debit from my account all they gave me was it was a reconnection fee. I'm still using the same number same sim. What reconnection fee was this and why was I not informed that an amount of R301. Would be charged for a reconnection? No explanation they did t no. They lodged a complaint on my behalf and said I would receive a call. I did not get any call from telkom instead an sms say the matter is resolved. At this point I reversed this debit order as it was I believe it was **********. Telkom went to my account 3 days later to debit the amount again. I reserved the amount once more and at this point called numerous time with no help from any of the agents they sent me from pillar to post and each one of them had no idea as to why that amount was charged. It had also accumulated from the reversals and is at R501 at this point. An agent called me a week ago and said he would disputed this amount and seem as though he failed because now telkom has blocked my number . This has been horrible experience and I have no idea what to do anymore. I have called in. Emailed. No help whatsoever.