Upgrade issues with Cell C

I have two main issues with Cell C:

1. Being charged for a 500 MB bundle that has not been on my bundle since the upgrade. This stopped on when I app**** for the upgrade in June and my statements up till September reflect the bundle

2. Data of more than 1.2 Gig and airtime of more than 200 minutes disappeared from my phone when I upgraded. Before the upgrade I was told it would not happen. After the upgrade when the data and minutes disappeared I was assured that I would get it back the following month but this has not happened.

I have queried Cell C billing a number of times and unfortunately they only address issues when complaints are made via HelloPeter or other avenues. This is a shame because their contract offers are very attractive and their network service is excellent however it seems they counterbalance this with questionable billing.