Absolutely Ridiculous

I took out a 2 year contract for a tablet in 2017, it costed me R120 per month. After a year I realized that I never use the contract so I decided to stop the contract after the 24month contract ended. As the contract ended i went in to the shop so they can help me stop the contract and the extra payment per month. They confirmed on the date that the contract won't renew and payment will be stopped. Every time after that I got other contracts for my personal Phone and asked why my contract was above the agreed price they said it must be for the watches that I got with my packages, so they never told me I am still paying for the tablet contract. A month ago I got a new contract on my personal phone again to try save some money and it happened again, that I was paying more than the agreed price and this time I did not get a watch. Only once I enquired about the amount ,then they told me I have another number and I am still paying for that tablet after 5 years of stopping that contract. They have even told me over the phone when I asked for it to be sorted out and for me to be reimbursed that the number has not been active since 2019.