Supersonic

Since end of July 2021 I have been trying to get my sipscription with supersonic for wifi cancelled and stopped. I have an debit order on my bank account for the monthly payments. I have e-mailed their accounts dept. several times with no reply from them what so ever. With several phone calls to them where you must wait in line for ever until your number comes up, nothing has been done up to now. Every time they promise to give it threw to their cancellation team. They are steeling my food from my table now. I even went to my bank to put a stop on the debit order just to hear it must be done from supersonics side. I don't what to do anymore. They must pay my last payment that went of on 02/11/2021 reversed back to my account. I dont use the wifi I switched it of. Please help. Annemarie