Promotional Data not loaded

I upgraded my contract in June 2014 to the Smart M package for a Samsung S5. The contract came with 300MB data for 24 months. In addition I received promotional data - 1 GIG for 3 months and an additional 250 MB for 24 months. <br> <br> I received the 1GIG for 3 months however to date I have not received the 250MB for 24 months. I discovered this in March 2015. Vodacom's negligence has impacted my bottom line. I have logged a service request (S3-80K20-0CI5M) to try and resolve however I am getting no joy.<br> <br> I would like a response from Vodacom on how they plan to compensate me for their oversight in two working days failing which I will take this up formally with ICASA.