DATA LOST- BAD CONNECTIONS

I Bought 2 GB data Yesterday and 3 GB data tonight. 92% through the update the connection was reset and I lost my data.<br> I am using a downloader program but this did not help as the downloaded started again and stopped at 72%.<br> I am MAD because VODACOM's Connection just drops from Full signal to NO Service and then after few seconds again full signal! THIS COST ME MY 3 Gig Data - R299 and I have nothing to show for my download as is did not complete - all because VODACOM's Signals drop for no reason. Where do I launch a enquiry to get my data back?<br> <br> Thank You