Disappearing data

Every month I get messages that my data is depleted and I must buy a top up. I know my data is not depleted. I got sms on 16 Aug 2021 saying my usage is 50%, on 22 Aug 90% 26 Aug 100% and on 31 Aug 70% without having bought a top up. This happens every month and when I get close to the alleged 100% usage my service becomes intermittent, every month without fail even though I actually still have data available. Wonder how many people buy extra data unnescessarilly?

Their complaints and client service departments are non-existent. People leave replies on Supersonic posts on their Facebook site just to see if they can get some kind of service, please look at those public replies. It is absolutely shocking how little regard this company has for their customers.