Really bad service

I am really sick of Vodacom. I have been trying to cancel my contract with them for almost 2 months now. Every time I phone they open their book of excuses and have some other reason to why it is not cancelled. It is coming to an end on 26 June and if I am being billed for anything in July, I will need to report this to ICASA and the consumers complaints commission as they are not doing as they have been instructed to do by their customer. After 12 years of being a customer of Vodacom they have become really bad in all aspects.