Outstanding amount how?

I was with Rain from December 2022. I encountered problems for about two weeks in that December with no network until they changed the router. I was promised a credit to my account for the two weeks of no network. Nothing came. Fast forward to 20 February I submitted a ticket requesting a cancelation as from 1 March. No communication. 1 March am attempt to debit my account was made and they even called me to say that my account was in arrears. How come wjen I had canceled? They said I was owing for February. Even up to now they are still trying to debit double the 569. Today they tried R1162. I tried calling them and their number says it does not exist or you're put on hold forever. They haven't collected their router even.