data needs to be reimbursed

On The 20th December 2014, I did an upgrade on my cellphone package. My new package offered 3GB Daytime data & 3GB FREE night express data. I don't know how, but it turned out that for the first 2months I didn't get my night express data which meant I was unknowingly using my daytime data. After logging many calls & being told that I am not on the package I chose and signed for, I went back to the MTN Westgate branch and the ever helpful Tshepiso logged a call from her side. It took a while but eventually I was credited with 9GB night express data. No apology, just a credit of data I'll never use or finish. <br> What I want is to be reimbursed for the daytime data I lost during night express hours. I know there's nothing wrong with the @MTNzaService twitter handle, but yet for 3 weeks now I've gotten no response to my tweets & DMs