Very. very disappointed with my Vodacom contract!!

My wife are having a Vodacom contract since the beginning of cell phones in South Africa. I only came a bit later on board with Vodacom, just because I was looking for a great deal. I am now with Vodacom for over 10 years now, and I couldn't complain about their service up to now. At the end of March 2013, I was medical boarded with Parkinson's disease. And every 2 years I upgraded To a better package deal, that is money-wise worthwhile. I always took a contract about R240 - R250. And always I took out a contract for 24 months. Suddenly, yesterday, 31 August 2023 things went haywire. My wife went to pay my cell phone contract (R260) and our fibre contract, that we moved from a poor service provider to Vodacom, at Vodacom in The Wingtip Mall, Doornpoort. She told me that my contract on my cell phone went up from R260 (rounded) to R280 (rounded). I signed for a 24 month contract for the amount of R260. Is it not contract breach if you make the amount higher than what the contract stated? I took out my cell phone contract HONOR X7 when my Huawei fell and the screen broke. It did it at Vodacom's Branch at the Kollonade Mall in Montana. SADLY, I am very, very disappointed at this stage and moment, after many years of excellent service. I am still deciding if I am going to renew my contract with Vodacom... How many other people were also *****ed and they didn't realised it.

Vodacom, this is not a threat but a promise. If you can't help me with my problem, then I will do what is necessary to get the results that favours me.!