Manager do not want to talk to customer

I am very unhappy with the service I received from Game in Menlyn. I want to buy an Ice maker. There was to models on display. The one I want buy was out of stock. I told her then I am willing to buy the display unit.. Although the unit have a lot of dust on it and some scratches on it. I asked the lady if they do not give discount if the unit is not in a 100% condition. She said no discount. I asked for the box and manual because I still want to buy the unit. She said they do not have the box and the manual. I asked her to get the manager for me to discuss the price because I do not think it is fair to give no discount to an item with scratches, dirty and no packing and no manual and we even do not know what ells are missing. Eventually she comes back to me with a R100 discount on an item of R2000. I ask her again can I please show the manager the condition of the item and discuss the price with him but he did not do any effort to come and discuss it with me. I travel all the way from Secunda to do my shopping at game in Menlyn but if the manager does not want to talk to his customers I rather will not do any business with game again.