The worst service I have ever experienced :(

This is the worst service I have ever received. I called to retention team in January this year to cancel my contract. I spoke to a lady and she confirmed that my contract has been cancelled and my last debit order will be on the 25th of March. I then called again on the 14th of March to make sure that my cancellation is in order only to find out that the cancellation request I logged in January did not go through. The lady who was assisting me on the 14th of March then processed the cancellation request and she too confirmed that my last debit order would be on the 25th of March. Its the 27th of March and still my debit order has not gone off my account, which means I have to be inconvenienced and go pay at a retail store. I called the accounts team and I was advised that my last debit order is the 25th of April. I was livvid. Telkom has messed me around for the duration of my contract. I was never told about the April debit order. Telkom is the worst service provider I have ever encountered. I requested to speak to a manager or supervisior and was given the run around. Can someone from telkom call me and fix this mess.