What happened to my 5GB of data?

We bought R299 = 5GB data bundle from Telkom at 10h30 yesterday ( 24th Aug 2015). At 14h30 Telkom tells us that we have used up our data bundles. That was a shock, so we decided to call Telkom today ( 25th Aug 2015). Kwezi the call centre agent helped as much as he could he emailed the statement through to us, but this issue needed to be escalated to his supervisor whom unfortunately we still cant get through to due to high call volumes as they put it. This statement states that our data was depleted this morning at 05h43, our offices open at 08h00 and close at 17h00.