Cell C fiber bad service.

On 23/12/2018 I ask Cell C fiber to cancel my service on 31/01/2019. I had a 12 month contract which ended in November 2018. On 31/01/2019 mt service was suspended as requested. The last debit order did go off end of January so I don`t owe them any money. End of Feb 2019 they debited my account and I reversed the debit order because I did not have the service anymore and from beginning of Feb 2019 Vodacom was my new service provider. They tried a debit order again end of March.

From there every month they debit my account with R 2318, what I reverse every time. I have spoken to them with no response.

Yesterday they again debited my account and I reversed it.

Every time I must pay R 50-00 for the reverse.