Cancellation Nightmare

I am truly tired of Vodacom, i have been with Vodacom since the first time i got my first cellphone, thats about 15 years ago. Recently i canceled my contract with vodacom because the package i jad was rideculous and the out of bundle rates were crazy. So i phone Vodacom, got a camcellation quote and paid the amount amd emailed it, and i called the cancellation Dept to male sure they proceeded with the cancellation, which they assure me was done. A few days later, i get a call that my line has been locked/ suspended, again i call Vodacom and they inform me that the account dept have not cleared my payment on the system, so i have to wait. Then further to mu shock, my account was debited again for the full amount for a contract that has been cancelled. I am not sure if there is new management or theg are just really bad at dealing with customers but this is frustarting and time consuming.