Data Network

I bought a 2gb Data bundle for my prepaid line & shortly after the Purchase I got an sms saying I had been rewarded 2gb off peak 7pm to 7am data. In my excitement I made sure I downloaded stuff from the internet Starting at 7:06pm that evening. To my surprise I then received an sms saying that my once off data that I had paid for was depleted. Upon phoning them I spoke to a rep who couldnt answer why this was the case I the requested to speak to his supervisor who first told me I was out of 3g Range(Lies because I checked coverage as we spoke) told me that I needed to restart my phone in order to access this data bundle. I bought a second 2gb bundle, I proceeded to request that a complaint be lodged for my purchased data to be refunded. I then received an SMS the next day that said I had been rewarded a further 2gb data which of course i made use of but without restarting my phone the data was used correctly. I then got a call saying they would look into my request for a refund on the basis of my explanation. I received a call today saying they will not refund me my data because I used the second rewarded data. Funny thing is my wife got 2 rewards too she only bought once??