1GB data bundles dissapearing??

Good day Vodacom.<br> <br> Our company has 4, 1GB data bundle contracts with your company.<br> But two of the data bundles seem to disappear as soon as the new data is loaded at the beginning of the month.<br> <br> I am the IT technician for the company so yes, I have turned off auto updates on the machines involved.<br> The users use the net and emails but the data should at least last a few days, not 2 minutes.<br> <br> Please send me a contact person so I may forward the affected cell numbers..<br> <br> My thanks in advance for your help in this.. <br> <br> regards<br> <br> H. Goodman