My Vodacom billing nightmare

I did online upgrade on 2 lines to a uChoose Flexi 110 contract both on 8 Aug 17 which cost R99 p/m for 24 months for each. I was expecting my Sept bill to be R174 including R75 for an unrelated data contract + R99 for the 2nd line but it was R259+ R195 instead, I was informed that the discrepancy is as a result of R85 upgrade fees charged on both lines which is normally when done through a branch so mine was online. A Certain Bulelani Skulu Committed to arrange a credit note. October bill is now R 334 meaning no credit note was processed. Still puzzling is where the extra charge is for. Logged a call telephonically with a Michael on 26/10/217 who promised to resolve the issue. I challenge Vodacom to rectify this problem for good & also commit to some form of compensation for all this unnecessary commotion that they making me endure as it is only fair that they would have punished me had the error been on my part