Not sticking to Game Pledge

Good day. I went to Game Westgate last week on Monday to buy two DEFY combo sets of a stove, Oven and Hob. They had no stock and would call me on Tuesday. Also discussed was Hyperama had the same offer on special at a less price. Price match is part of pledge to reduce the price to the competition pricing. I went on Saturday back as no one called me and Joseph, the store manager assisted. he refused, to assist as he needed to get confirmation from another manager who was not available, firstly. Then he said I should pay for item now even though no stock and come back for the game pledge once he verified with the other manager. He could help me in this case only. I buy most of my items at Game and this is now only the second issue I have which I don't think they could resolve in the store. Really not what I expect. please can you address