********** upgrade since November 2018 still not resolved

I have logged numerous calls with Vodacom call centre and have posted a few times on Hellopeter but no one has called me back to resolve my issue. There was a fruadulent upgrade done in November 2018 and have been billed incorrectly but no one has bothered to call me back to reolve it. Vodacom has the worst customer service ever. They are only good enough to take the customers money but will not refund you.