Vodacom billing incorrect

I logged 2 queries with vodacom on 20th Feb and was told that they would contact me within 48 hours . To date no one has contacted me . On one of my lines they billed me for paper invoice which I have not received since Feb 2017 . The second line a new line I just took out they have billed me incorrectly as it should only be R129.00 vat incl plus the once off connection fee . ref numbers Ref 1- ********** ********** and Ref 1- ********** **********