Horrible past few months with Telkom

So I have been with Telkom for many many years. Loyal customer paying bills monthly with no issues. Up until these Telkom agents calling everyday 4 times a day everyday and each and everyone I declined their upgrade offer. In March this year 2024 I decided to take up the offer which I hoped will stop them from harassing me. That’s where my troubles started. The lady I spoked to offered me the 11gig offer which costs about R380 +/-. I asked her on the phone (which should be recorded) am I going to pay extra seeing that I’m taking this offer mid month. She told me no, in April I will only pay the monthly fee of R380. In April I thought the 11Gig is now loaded. Mid April my data ran up and I could not believe how 11 gigs could go so fast, I never used that much. I called the call centre 4 times!! All recorded. I saw my bill for April which has now sky rocketed to R1900?! I called again and asked for a manager. No one could get a manager to discuss. So eventually I got hold of an agent who can help me and said there were subscriptions on my account which I don’t know where it came from. I have all the messages of the cancelled subscriptions. So these subscriptions has been using the data and now I have to pay?! I never subscribed to anything and since the upgrade these appeared. Fast forward to today, my bill is R3550?! I need a manager to call me and explain what is going on. I had accounts I could not pay due to the increased bill. If not I’m laying a charge against Telkom this has been ridiculous and I’m refusing to pay until a manger contacts me.