Broken Samsung dishwasher

I bought a Samsung dishwasher from Game. I phoned in December to notify them that my dishwasher (which is still under warrantee) has broken. They said that a technician will contact me to come and fix my machine. This was almost 3 months ago and no one has contacted me. I am phoning them regarding this matter almost every 2 weeks, and despite promises being made that they will contact me to make arrangements for my machine to be fixed. Nothing is being done. I feel very disappointed and frustrated woth the service (or lack thereof) that I have received from GAME, and I would really like this issue to be addressed.