No feedback - 2 months later

I went to Game on 16 December to get my niece a tablet for Christmas. It was on special and was sold out by the time I got there. I was then told there would be stock arriving in the next few days & that I can pay for it. I paid for it and received a green slip. Still no tablet, no feedback from that branch. They never pick up the phone. Head office number is always busy. Two months down the line and nothing. The worst customer service ever!!!