Pathetic service

I have been using vodacom as a provider for many years!!!!! I currently have 2 contracts, 1 of which is ending at the end of May. I called in on the 06th of May to cancel this contract as it is no longer needed. I was advised that the cancelation has been processed and my last installment would go off on the 29th of May which I was happy with as per the contract agreement. A while later, I received a call from vodacom upgrades, requesting that I migrate the number onto a different plan. I advised that I just called in to cancel and then the lady tells me that she cannot see a cancelation and I should call and follow up. I asked her why should I call and follow up and she says she does not know as she is calling from upgrades and then rudely cut the call on me. I had no choice but to call back and then was assisted by someone else who eventually just migrated me to a different plan. I called on the morning of the 07th as I decided I just want to cancel anyway and this consultant names siphesihle is now trying 5o migrate me onto a different plan. I had to explain my situation many times and try not to get upset as I am spending so much time just trying to cancel this contract. He then tells me that I have to pay a penalty for canceling.... I am so tired of this that I don't mind and just want this to end. I am absolutely disgusted at the level of service that vodacom provides its customers, especially that I have given you business for many years. I am looking forward to not dealing with vodacom ever again!!!!