Upgrade contact offered, but not honored

<p>I app**** for an upgrade with the vodacom retentions department in May 2016.</p> <p> </p> <p>I was provided otherwise an offer which included additional minutes and data for the duration for the 24 months of the contact. I then received an email with then received an email confirmation which reflected the basic package. I contacted vodacom was was assured that the correct offer is on the system and would be honored once the upgrade took place in June 2016.</p> <p> </p> <p>I have emailed and called, spoken to a number of people all promising to fix the account. I am still waiting.</p> <p> </p> <p>Furthermore, I see vodacom deducts newly loaded minutes first instead of those which are due to expire. Or is this just another billing error?</p> <p> </p> <p>Worst service ever. </p>