Useless Service

Bought 200 Gig data on 30 October. All gone the next day. Called Cell C, promised to get back to me ASAP- no response. 3 November I visit a Cell C store, they call the help desk, I hold for 5 minutes, they come back and say they can see I bought the data, and they see that it is lost on their side( at least they acknowledge their fault)- their response is that it will take a month + to investigate... how I the world is that possible, and they could not get back to me in four days, they will never get back to me in 30... useless-service... will never use them again after they ***** my money...