Chaos and confusion

I have recently received some Christmas gifts which i no loner need. I was not sure where these gifts were purchased as they were given to me by clients. I have approached Game stores to take back the items and to give me a gift voucher almost 1 week back. The amount of confusion this is caused is unbelievable. The game policy clearly states that if they stock the item, they will either replace it or swap it. The items that i have are angle grinders and big Jim tool boxes. They obviously can take back these items as they stock it. All i am asking for , is a gift voucher not a refund. The bar code numbers on my items do not appear on the Game Point of sale system, so they cant help me. I have brand new items guys, come on, cant we help each other out here!!!