Incorrect allocation short changing my allocations

Today I received a message from Vodacom informing me I only had 300 mb of data left in my allocations I find this extremely hard to believe as I checked my usage on my iPhone and i have only utilized 917 mb . My allocation on my uchoose smart L contract plus extra value added services for 24 months ( Vodacom increased my allocations due to previous failed service I have saved mails in writing that these are in place as per Vodacom head office ) are as follows uChoose Smart L package: (Standard)<br> 250 Minutes<br> 500MB data<br> 500 SMS's<br> <br> Extra Value Added Services:<br> 500MB Data x 24 months (iPhone deals)<br> 1GB Data x 24 months (Incentive)<br> 200 SMS's x 24 months (Promotional)<br> <br> So in actual fact I receive 2gigs of data per month or rather I'm supposed to as per the above pulled from a mail I have from Vodacom head office : clearly given that Vodacom has smsed me that I only have 300mb left says to me that I have not received my full allocation including the extra value added services put in place by vodacom head office months ago . Vodacom you have some answering to do this is not on where are my allocations ?????