VODACOM = VODA-DOM

I'm unable to cancel/terminate Vodacom Data contract. I've completed the process and received an email concerning the wrong department contacted. I have contacted the number provide in this email received and still not receiving adequate service. Seems its easy applying for a product, but cancelling it is like spending time at home affairs just to be told to the system is offline or come back again. Why is it so difficult to annual the contract, should we rather cancel the debit orders then get blacklisted and so on.... Just do you work.