Billing for Contract that was cancelled 5 months ago and suspending my other services

My smart broadband contract was expiring in December 2020, I placed a cancellation notice in November 2020, after being told my contract will be cancelled, I have been billed every month since, I have reversed the debit orders and manually paid only for voice contract that I still have as I was told by a Telkom consultant on 1 of my numerous customer care calls, so Eventhou I have been paying R101.00 manually for my voice contract, today my contract was suspended because I'm behind on payments for my contract that I have cancelled, I have spoken to Telkom customer care, logged a report on the website, contacted Telkom via twitter and still this has not been sorted out yet.