Preliminary cancelations "term"

I still feel that vodacom has no way of doing business which me and those close to me will never use their services. Their system failed them and I got pinalised at the end of the day. I actually wish they could pull the recordings of the day I called in to cancel now I'm been told about preliminary cancelation of which i wouldn't wanna settle an account to be credited which in their term that is basically paying ahead of why would I wanna pay in advance I'm very disappointed.... I am gonna tell my story because this is tricky and if you not aware one gets ****** like I did.