What a disgrace!!

On the 30th of March, I received a text stating that from the 1st of May my subscription would increase by R20. What a cheek. Not the R20, it is the principle. Two weeks ago, I received a call from one of your call centres, offering me a R89 tablet deal. So I said, how do I know that you are not going to change your mind half way through the contract and increase the monthly fee. That will never happen I was told, as it is a fixed agreed amount. To which I responded, really, how could you then do this on my current contract? She was really shocked and cut the call as quickly as she could. Once again, great customer experience. I have received two two reminders that my contract is due to expire - not sure I want to renew a contract with a service provider who carries out such practices. R20 is just enough for people to not enquire about it - really underhanded. How do consumers know that this practice is not going to become business as usual.