System Migration excluding my discount

On the 03 Jun 2024 i called Cell C Fiber and was assisted by lady called Rona Rasemetse and i explained that the discount was not included. When i called last month i was advise that it's technical issue yet i was debited the whole amount. On Monday when i called Rona mention that they will escalate the matter, it's Friday and no response has been received. Rona mentioned that between Apr/May there was system migration but my discount was included. We heading to the second month and nothing ha been communicated. Rona manager is Xabiso Ndumndum of which has not responded. Am really disappointed