Refuses to help

I purchased a Goodyear toolbox from Game in December for Christmas. When I opened the toolbox I saw the one ratchet is broken. I went back to game to exchange the ratchet just to be told they cannot help me because the product is out of stock. I told them that it does not have to be the same ratchet I`ll take any ratchet as long as I have one. Manager decided to give me a R30 voucher as discount for a new one. When I looked at the products available they cost R450 and to me this is unacceptable. When I went to complain that this is not fair to me as the customer they said I have to wait for suppliers to reopen so that they can phone and get me a new one. I gave them until end of January and then I phoned just to hear no sir we did not and we won't help you. After a hard argument it was said we will phone head office and I must phone back in a few weeks. I did with no result the manager refuses to assist me in this matter and I'm disgusted, response was go to builder warehouse. The one then told me they will phone me if they have news it's APRIL!! now and no answer. If this is the way Game does customer service then good luck staying open in future. Can someone assist?