Cancelled simcards and poor sales guy who did not tell me that the simcards dont work on pones and routers

I cancelled these simcards via the phone and app, they gave an email vbcancellation, I sent to them, also sent to customer care up to date no response, sent the same email to billing at voda they return kark massage that the inbox is not attended. since october I have been making calls from department to department no *** body cancells these simcards yet vodacom is deducting money for them.