Billing and upgrade problem after problem

Firstly there was an issue when i wanted to do my upgrade in the beginning of the month where they told me I'm unable to do so because there was a waiting block in effect and I can only come month end to upgrade. In waiting till month end that is today I went back to the Vodashop to do my upgrade after receiving an sms stating i can come in to proceed with my request, in arriving there I was already blocked with the same problem that prohibited me from upgrading in the beginning and when that was finally fixed they said that my package has been lowered and I can not choose my new package or devise that I want. This is truly unacceptable, i have been a contract holder for 10 or more year's now and paying my account and this is how VODACOM treats me, they even raised my payment with out any notification. I feel truly robed and mistreated by Vodacom, i am only getting problems after problems. I'm at my wits end with them and i'm really considering to cancel my contract with them and be done with it. It's apparent they don't care about there long term customers and only throw excuses rather than help you. With all said i really don't want to move networks and hope they fix this problem