Angry and annoyed client

Good day I was Cell C client Im angry and annoyed by their service iv been with them since 2018 having data and router contract and paying R149, in August when I was terminating the contract I was told me I cannot terminate because there's a schedule upgrade that is starting end of August of which I did not give them permission to do that, I asked them to cancel that upgrade of which they did after a week. Now my problem the contract was finally terminated and last deduction was end of September to my surprise they deduct R390.49. I asked them why this much the lady I spoke with said because all these years my contract was on discount, now because I terminate they deduct full amount that was never discussed with me from the day I took contract even when I was terminating no one told me about this discount. How dare they took my money without my knowledge Cell C are ****** I want my money that difference was not on my budget for them.

I will never recommend this service provider to my family or friends they sucks.

I want my money back.