Cell Phone Contracts

I have been a loyal customer of Vodacom since they started in South Africa and have never had a problem, but this Year they phoned me to renew my cell phone contract and the person I spoke to, I explained I am a pensioner AND CANNOT AFFORD TO PAY MORE THAN I AM PAYING AT PRESENT. He rep**** that this was in order and I would pay exactly the same. So our conversation ended and 2 weeks later I recieve a sms that my computer modem contract is also renewed which I never agreed to because I do not use the modem any more and this is much higher than what I was paying AND I DO NOT WANT IT ANYMORE BECAUSE I DO NOT USE IT. I phoned Vodacom and told them to cancel it as I have not used it and do not intend using it. They rep**** they would investigate but it shows the consultant phoned me twice, which is not true he only phoned me for my phone. Today when I checked my Vodacom app my bill is more than a R100-00 more than what I was paying. If I add up what each item is on my account, their total is R5-00 more so apart from the fact THAT I STATED I COULD NOT AFFORD MORE THEY INCREASED MY TOTAL ACCOUNT and they are *****ing a extra R5-00 for good luck. IF THIS IS HOW THEY TREAT THEIR LOYAL CUSTOMERS, SORRY I DO NOT LIKE VODACOM AT ALL.