Vodacom does not allocate 5GB as per contract

I upgraded my 3GB contract to 5GB end of May 2015. On 1 July I complained to the call centre that my account reflects 4.2GB and 3GB Night Owl at the beginning of the month. It should be 5GB and 5GB. <br> <br> I received the following reply from Romeo Erasmus:<br> Please note there is a problem with our bundle allocations and this is currently being attended to by our IT technicians.<br> <br> I accepted this explanation. On 1 August 2015, I switched on my router at 08:45. My account again reflected 4.2GB and 3GB Night Owl. I mailed Vodacom Customer Care with the details and screen shots.. Vodacom requested another mail with my cellphone numbers and I sent that as well. They then sent a mail requesting my ID number and Bank details which I'm not willing to send via Email. <br> <br> Vodacom is in breach of contract. Every month 800mb of my data is missing. Night Owl allocation has 2GB missing.