Bad service

I cancelled my subscription on 24 March 2021, I was informed that I will be contacted with processes to follow. Today is 30 April 2021 and still no one contacted me. I have called 3 times, emailed 3 times etc. The only contact from Supersonic was 22 April from RAM couriers for collection of the router. Debit order still not cancelled and now they are manipulating invoices on their website thinking I won't see it.