Vodacom is the worst network and robs customers

As usual, Vodacom does not cease to disappoint when it comes to making customers feel like we owe them something. I confirmed a contract cancellation and upgrade on both 27 and 29 November to be effective 1 December yet they are still billing me for my 2 older contracts. the amount is in excess of double the value I should be paying as per what was agreed with Nkululeko at their retentions department. I have not been given any help to rectify this and still await any kind of feedback from them. I even requested the calls to be pulled up which they have yet to do. Absolutely the worst network, forget upgrading, this needs to be a complete cancellation to break any ties with this ********** network!