*******... Vodacom are con artists!!!

I rated 1 star because it doesn't give me an option to choose no star. My vodacom contract expired in Feb 2019. From November 2018 vodacom had been calling me to renew my contract and I have been declining to renew my contract as I couldn't afford to take another contract and I wanted to port to telkom as their data was cheaper. In Feb vodacom calls me and tells me that there's a 20GB deal where my contract goes from R210 to 199 which I thought was a good deal as my previous R210 contract was for 5GB data. The consultant tells me I pay R199 for 24months. NOW THIS MONTH MY ACCOUNT GETS DEBITED FOR A R298 WHICH IS EVEN MORE THAN MY INITIAL CONTRACT AMOUNT!! AND THEN I GET TOLD THAT MY CONTRACT SAYS FEES ARE SUBJECT TO CHANGE!!! I HAVE A CONTRACT FOR YEEAAARRRRSSSS MY SIGNED CONTRACT FEE WAS MY CONTRACT FEE FOR THE ENTIRE DURATION OF MY CONTRACT, WHY THIS NOW???????? I'VE NEVER BEEN THIS DISHEARTENED EVER AND I NEED ANSWERS AS I CAN'T AFFORD THAT INCREASE IN MY CONTRACT!!!! HOW DO I RENEW MY CONTRACT AND 2 MONTHS LATER AN INCREASE IN FEES???? I REALLY HAVE SO MANY QUESTIONS!!!