CellC lacking service delivery.

After complaining about the lack of service, CellC phone me and said that they will get back to me. Gave me a ticket number and haven't heard anythkng since. They are keeping me from purchasing my home and they are not compliant at all. It's frustrating and I have to do everything from my side. I canceled in May and since then they have been billing me and they increased my monthly amount, increased my fibre speed, without my consent. I have not lived at my old residence since I have canceled.