Cellc Contract Cancelation **** 😡Call ***

I wouldn't recommend cellc to anyone I know. I've once opened up a cellphone contract with cellc on 2019 and the contract ended last year July 2021. Since I didn't put up a 30 days notice prior to cancelation I was advised to do so in August. Of which I did and the following month, September my cancelation was granted and I received a cancelation confirmation sms. To my surprise I've received an sms after a week saying that I'm owing over R4600 which I didn't know where it came from. And to make the matters worse I was following up with the cell c team but no one seems to be able to give me answers as to where the amount is coming from then bounced from agent to agent on their call center even their so called team leaders couldn't answer they always said they would call me back when they have answers which they never did. I kept following up until I went to one of their stores in Centurion mall and the consultant showed me my account statement from their side but still couldn't explain as to how I got to this amount. Mind It's not possible to cancel a contract when you're in arrears so there is no way I would have owed them money before cancelation. Most of the consultants could see that the mistake is from their side but still were not able to clear me off this debt. To say I'm angry would be an understatement