Incorrect Billing and Terrible Service

I am so disappointed with Vodacom, I have been a customer of theirs for over 15 years and never have I had such bad service. My data contract came to an end in February so I called in to cancel as I don't use it because we had Fibre installed, I spoke to Jerome in cancelations and he persuaded me to keep the data contract due to the fact that I'm a high rated client so I qualify for a discount on one of my other contracts, this was a bargain as I was paying R378.99 for the contract and would now be paying R154.00 per month. In February when I received my bill it was still for the old amount so I phoned in and was assured it would be fixed from March but surprise surprise it's still for the old amount. I called today and was transferred 4 times without anyone being able to assist, I was then transferred to Elite Mobile for some reason without even being told I'm being transferred the lady advised she will get someone to call me but I doubt they will. I want the billing on my account to be corrected and charged what I was quoted as this is against the Consumer Protection Act.