Never signed up and unable to cancel

Since June 2026 I've been charged for a DSTV account I never signed up for. I contacted the call centre to show me the contract where I signed up for the service and they couldn't provide any information about it. I said they should cancel it immediately since I never signed up for anything and also didn't authorise any debit orders on my account. Now 2 weeks later and it still showing that the debit order is active and I received no further communication from them regarding the cancellation nor to show me the contract that I signed up for the service. They are simply taking money out of my account every month *******ly for a service I never signed up for and they are also not able to provide proof that I signed up for it in the first place. There is also no way to cancel this service as I've now attempted twice without prevail. Useless customer support!