Third HelloPeter post about VodacomFibre because they have not resolved my query

I think my calculator is broken! I attempted to give Vodacom wifi services a try and asked for a Fibre router to be installed in MARCH but it was not installed so I got fed up with the first poor service I've received from Vodacom and I cancelled upon cancellation I was assured over the phone I won't be charged, and you have probably already guessed correctly - I was charged R599 for wifi never installed nor used in AUGUST (how am I charged 5 months later??) (Second Poor service) I then went onto HelloPeter because there IS NO CALL CENTRE NUMBER FOR THE VODACOM FIBRE BILLING DEPARTMENT then I was assured over email that I will not be billed again then BAM I'm billed R599 in September again (still not having used any of vodacom's services) (Third poor service) I was then emailed a credit note R618 & R19.32 and refunded R898.49 (Fourth Poor Service) - I think Vodacom's finance department are using special kind of calculators because if I am charged R599 for 2 months that should result in a R1198 refund right? This value doesnt even coincide with the credit note, I don't know who is more confused, me or Vodacom at this point? I am owed a R299.51 refund and times are tough I need that money! I can only pray I am not billed in October now too. When I think long and hard on the list of companies that have provided such bad service to me - all of the above makes Vodacom number 1. I have never been this inconvenienced in my life, it has actually costed me money to get money that is owed to me and get this sorted out and I will not be compensated for my troubles. Please someone help end this nightmare of bad service.