Upgrade Issues with no response

I was informed to upgrade my contract. I did the contract upgrade online , with a message that an agent will call me. That never happened. I received an Sms that my delivery for the new device was on its way, I contact vodacom to arrange for a delivery date since I was on holiday and there was nobody to receive it at the delivery address. Despite informing them they still tried to deliver, finding nobody home. Eventually the package was send back to Vodacom's warehouse , with no further communication from them. I called and resubmitted my upgrade details . This time the package was delivered within 2 days, this all happened about a month after I started with the upgrade process. I received a message that my upgrade was completed , only to see that they have upgraded the wrong phone number. After calling Vodacom numerous times and everytime being referred to a different department, they finally told me that Vodacom didn't do the upgrade but some other company wns is doing it. Needless to say , this company don't answer there phones and don't replay to any form of communication. So now I stopped all payment to vodacom on all 5 my contracts until this is resolved. I'm waiting for vodacom to PLEASE call me ....and ask for their money. I cant use my phone !!!!!