Discriminating against current customers under debt review

We have been a client with cell c for almost 7 years. Have 3 contracts always on date. Due to covid 2020 we had to go under debt review but still did not skipped any payments. Now we want to upgrade again and they dont want to assist us. We also did upgrade in march 2021. No they refuse to assist us first we had to wait 7 days for them to phone us back we phoned each and every day bad serice. Motlosana klerksdorp. You want our money but refuse to help us.