Vodacom poor customer care

I have been trying for three months to stop my two data contracts. Have not been using it for months. Went inside the store, they phones customer care to assist me. I am still paying. When I sent a complaint, they have sent me a link to a ROBOT! I can not put both the cell numbers for both contracts in the form. With the in store call, they said they will send me an email which never happened. I can not phone from those numbers as I do not even have the SIM cards anymore