Cancelation not taken seriously

I ve cancelled my month to month contract with rain on the 9th of September 2022. Rain has not contacted me a single time since. Yesterday I receive an sms from them saying that my fee is going up by R 20 in November. Rain has promised to pay back money because I ve had no internet from them for over a week. Hence the cancellation. No monies have been paid back. They can keep it. They have no proper line to call customer care or no customer care to call a client. Even if u reply to there automated messages on e mail, still no reply’s from them. Their service is terrible. I don t want to be associated with rain again.