Machine cannot address all clients querries

I want to cancel my contract, all I get from the call centre prompts is when it tells me 'your contract has expired and you are on a month to month contract'. That I know very well but I want to cancel the month to month contract. Your so called franchises, they are forever willing to dish out contracts but quick to pass the buck when you need help. Them being franchises is between Vodacom and them, as a client where I see Vodacom or MTN I see service, the details of your relationship are none of my business as a client. Please cancel my month to month contract so we kiss and say good bye, service not impressive at all. Cell number to cancel is ***