Data Woes

I am so disappointed with Cell C, I don't even know where to begin. I got a 2 year contract with them a few years ago and all was well. But when lockdown happened I bought their 50GB special offer and according to them I used up 27GB in one weekend. I tried to track the usage on their app but it locked me out and in order to reset it asked for an OTP sent to my WiFi SIM? How exactly am I supposed to access the OTP from my WiFi? Anyway, I called the support centre and they told me I just have to phone them whenever I want to check my balance. Ridiculous! Then I asked for a break down of my usage showing the sites I supposedly visited, they told me I needed to pay a fee and then I will get the breakdown. That was early 2020. To this day I have yet to receive an itemized bill. I had a problem with my router, I called customer service, they hang up on me. I asked to cancel my contract, I sent an email telling them I do not wish to renew but debit orders were still going off my account. I called to correct this, they hang up on me again. Final straw was 2 days ago, I told them whenever I try to connect to the pocket router it gives me an error so I am paying for data I cannot access. The technician that was assisting me kept giving me instructions for a large router telling me to press buttons that didn't exist. I was explaining to her that there are no buttons on the back of the pocket router, she hang up on me! Now I am still paying for a contract I never wanted to renew for data I cannot access!!!!