terrible service

I had purchased a cell phone on the 29th December 2015 , where the manager sold me a demo phone that was displayed , I had asked her for a discount or some airtime as compensation as it was a phone that was displayed already and had a sticker on , she was unable to process my request however she is the manager , she won't even smile with the customers and to top it off I asked her if she did Rica the Phone , she **** to me to get me out off the shop I asked her more than once , I could not use my phone the whole night and thanks to the manager my wife is without a cell phone today , I cannot even contact her , I had to take time off from my work and a good friendly Gent by the name of derrick assisted me , I am pleased with his attitude most of the females in the shop is stuck up I feel I deserve an apology