Billing query Webafrica services suck

I'm utterly disgusted and so frustrated with the poor service and lack of customer service and knowledge of the agents at webafrica! I've spoken now to several agents in the last month and still my query has not been resolved! When I app**** for my fibre with them I was told that I was going to be billed R19 for the first month after being activated I was activated at the END of November but was billed the full R689 at the beginning of December!i queried this and it was escalated to the senior agents of who said that a credit note/invoice was app**** to offset the amount, I even received an email with the credit note invoice on the 5th of December. Now come beginning of Jan they first billed me R786 and the by the 11th of Jan my outstanding balance was R808 my service was suspended. I paid the outstanding balance as I needed the fibre active to apparently query anything. On the 11th of Jan I spoke to Sisanda who told me that she sees the credit note and that I should be refunded within 48hrs, I spoke to another agent who advised me the same. Thinking that my query was resolved it's now 72hrs and I have not received ANY FEEDBACK or REFUND. I queried it AGAIN this time I spoke to Siphamandla who very arrogantly told me that the credit note was declined that's what he says sent a screenshot of it and says that he's going to apply the credit note now so I MUST CONTACT THEM IN 8-24HRS. I want my query resolved today!!!