Vodacom Premium keeps on increasing

I got a call in March about 20GB data for R199, I was promised that there won't be any changes on my Sim Card that i'm currently using, except that it be changed from prepaid to contract Few days later I can not see who is calling me, when I call Vodacom I was advised that I need to add R9.99 for caller ID

That was not enough with Vodacom, a month later my premium has increased again to R218.99, I called Vodacom again, I was told that there was an increase .. How can this contract increase I don't even have 6 Months with them and the contract has increase!

Cancelling this contract has become a problem, What Vodacom gave me was Data only and to cancel this I have to pay +R5000 for what? because Vodacom has to stop giving me data

Now in August when I call Vodacom I was told that I will be paying R214, how does this even work?

I'm tired of this Vodacom, I hope coming here will help me to cancel this Vodacom contract that i'm not sure anymore what is my premium and what I am paying for.

When I took the contract I was under the impression that my premium will be R199, not this R218.99 and R214.

Cancel my contract and change my sim card back to prepaid.