Vodacom refuses to cancel a contract

I am trying to cancel contracts, they have already expired and I want to stop them now as they are not in use anymore. 17 calls and 8 consultants later I managed to get 3 of the 4 cancelled. The first consultant **** about the number not being on the system and eventually three promised that it would he cancelled, but no, it has not. I believe underpaid consultants are being forced by the company to lie and to divert and find any possible excuse NOT to cancel. Vodacom, you are deceptive and dishonest and as a customer of 20+ years I am positively disgusted. I have another 4 contracts with you. Is this really the treatment your “valued” customers get ? Stop your bull****.