data account problem

I checked on 14 August 2017 my data balance. To a horror surprise it showed that I have non of my 2gig data left and my data Account from 1 August to 14 August is standing on R1800+. There is no way I could have used my 2gig and another 1,2gig in 14 days. When I phoned Vodacom 082111 on 15 August 207 the technical department did not advise on any problem on their side and said I must wait until the month end before they can look into this matter. I was also advise that once the query is logged it could take up to 2 weeks to get feedback. I feel like I am at the loosing end. Currently I cannot use my ipad for mobile use to check emails.