Debit after cancelation

Vox is amazing when you have their wifi service, but atrocious when you cancel. I canceled my wifi on 24 July 2023 and was told my last payment will be 1 August, I was fine with that and paid. I was deducted again 1 September and logged a refund request, I was told it will be refunded withing 14 days. I have followed up numerous times and I still don't have my refund! When I eventually called, they told me the first refund request was not logged successfully and they need to log it again, it is now 11 October and I'm still being told I must wait for my refund to be processed! I lose interest every day that amount is not back in my account and I've canceled 3 months ago!