Vodacom Automatic Fiber Line Upgrade

I joined Vodacom just more than a year ago and had a 20 Mbps line installed. Vodacom shortly afterwards did a bulk adjustment to 50 Mbps line as apparently the smaller line in some areas is no longer available. I contacted them to downgrade on 20 June 2023 as I do not need such a large line and the cost is much more. On 1 August my bill was still the same and I contacted them to be told they did another bulk upgrade on customers on 1 Aug 2023. The are *****ing from their customers. Now all of a sudden the 20Mbps line is discontinued. I don't believe them. They are intentionally not making the line available to ****** more money from customers. So you get a contract that is cheaper just to be upgraded with no further choice to downgrade. I need to be on Vodacom for 2 years before I can cancel. What a clever ploy to increase their bottom line and get customers to pay more. No consultation or option to go to another service provider. You are signed into this contract.