Vodacom contact not being cancelled

My contract with Vodacom ended last year in September 2024. They have been deducting funds from my account until I blocked it with the bank. Its been over 7 months, my contract is still not cancelled, and my phone has been blocked. They have been claiming they will sort the matter, but all my calls have been in vain and with no positive outcome. I called the call center to request that they activate my phone, but nothing has been done. I work until late and struggle to request Uber to go back home, which had put my life at risk because I had to rely on cars I couldn't even save the registration number because my phone is still blocked, regardless of the payment I made, even after my contract was cancelled. To date,e nothing has been done.