POOR RECORD MANAGEMENT AND CUSTOMER SERVICE

It's been been almost 2 years now since I cancelled my wifi with supersonic but I just received a final demand sms for something that was cancelled and collected a while ago. No communication was even sent to me before about this. Your agents are not even willing to assist, all they do is tell me the router was never collected while IT WAS. They gave my address and the collect fee. I neeed you guys to do something about this because the router was long collected. Im not happy with kamogelo, anele and palesas services all they do is put me on long holds and dropping the calls after. I need urgent assistance regarding .