False promises

I called in to cancel my data contract for my wifi ****le mid january2016, the person I spoke to saw that I was on a smart S package with an extra 250mb data monthly giving me a total of 450mb, he then persuaded me to do a Migration to a u-choose flexi200 and offered me an extra 1G data incentive every month, no hidden costs, apparently for my benefit. I double checked that I would be getting what he promised me before I agreed. At the end of January I got an SMS to say that my migration was successful but when I checked my balance I had only been given 250mb data so I logged a query. 2 weeks later I still hadn't heard back to I had to call back and waste another 20mins of my time just trying to speak to someone who then informed me that he couldn't help because I had already made an enquiry. A few days later I finally got an SMS from Kevin Bester to say that it had been investigated and my incentive 1G was activated, I received the outstanding data allowance. March arrived and this time I have been given 0 data! so I went to the customer care shop at Somerset mall but was told there that they can't do anything and I need to log a new enquiry which could take another 2-3 weeks!!!!