Oh snap! They did it again!

Vodacom clearly has no regard for our accounts and private details that's why people can just migrate and upgrade on our accounts without the account holders authorization. Last year my account was upgraded without my consent and I went from paying around 150 for sim and data to paying over a 1000 for subscription and a high end handset that I've never set eyes on. After a process of making affidavits and calls the matter was solved and I received credit notes! Very funny I know! But that wasn't enough because I just realized that I've been migrated to a uchoose flexi 350 subscription and I'm paying 350 for it and 380 for a handset that I again have never set eyes on! Communication on chat with your agents has enlightened me that the handset is an iPhone 6. While I am using an old blackberry that dies without warning someone is walking around with a high end phone and I'm stuck with the bill. I've been told to make an affidavit again and the matter will be escalated. Now I again have to waste my time going up and down for something I did not cause! How do I get out of my contract? I'll pay what I still owe I just want out! I'm done with you guys! It is over!