Why advertise when you have no stock?

I spotted a treadmill in the specials advertised by Game - a Trojan Stamina 320 for R5990 - and it is just what I have been looking for for a few months now. The special is advisertised to run from the 8th April to the 21st April. When we visited the store in Boksburg on the 11th April, the staff reported the shop as being out of stock. He looked in all the stores on the computer and they were all out of stock. He promised to call when one became available. Needless to say, no call and another visit to the store today gave the same results - no stock. Why advertise this if you are not carrying stock? Not good enough - up your game!