MTN South African are ****mers!!! Horrible service ever, sign up for a new at your own risk!!

MTN is a ****, Ive been with them since 2008, and recently cancelled my contract with them after it ended recently in April 2023. My initial bill was 249 per month and over the time it increased to R278, R295 and worse last month it was April it was R789, despite cancelation notice. I have cancelation ref no.