Contract cancellation struggle

At the end of January my house was broken in to and I was held hosstage. My LTE router was ****** with the sim card. I went in to Telkom Tygervalley to cancel my contact and get the device and sim blacklisted. My router was paid off and contract was month to month. They gave me cancellation form to fill in and send to Telkom. I emailed the form on the 29th of January with a certified copy of my id and case nr from the police. I heard nothing back from Telkom. My debit order went off. On the 26th of Feb I went in to Telkom Tygervalley to find out why contract has not been cancelled. They could not give me an awnser. They gave me an escalation form to fill in and sign. I asked if I could cancel my debit order with the bank, they confirmed that I coud, as I no longer have the device or service. I went directly to my bank and cancelled the debit order. On the 27th I recieved a sms from Telkom informing me that they will contact me in 24hours. Never heard anything. The 13th of March I recieve a call from one of Telkom's sales persons asking if would like to upgrade my package, I told him my whole storie and how I want to cancel my contract, his response " oh, have a nice day". This 17th I woke up with a sms from my bank informing me that an amount has been deducted from my account, ref Telkom. The amount double my normal debit order.I did not give consent. This morning I recieved an invoice from Telkom for a product/service I no longer have and a R200 penalty added for "no payment". I find the service as absurd.