I bought a pair of window balancing spirals 826mm on line (8th July) and found I selected the wrong item it was for aliminium windows instead of use for my wooden window so I visited your showroom at willoughby, the person at the front desk exchanged it for me and when my son installed on the window one of the spiral made a noise and we found it was faulty ,so a couple of days latter I tried to exchange it but the seller refused to exchange the defective product ,instead he blamed me for not installing it correctly and I had to pay for a new one ,I didn't want to argue with him and paid for a new one then I explained to my wife out side your showroom and she insisted I go back inside to ask him to check the item's functionality on the spot so we will not have to come back again, and apon his checking he found out the new item was also defective and he put it back with all the new items for sale, the faulty item was now mixed with all the new items and he give me another one this time he checked in front of me ,then I complained to him the first one I bought one of them was defective and as a comsumer I have the right to exchange the faulty item ,for me that when I saw him put the faulty item together with other new items, some one else will have the same trouble as me ,I was in a hurry and I regreated (1 ) I did not insisted to have the item exchanged, ( 2) when I saw the man put it back with all the new items for sale , I should have stopped him so your next customer will not have the same experience from this unscrupulous salesman , many thanks for your attention . Kind Regards. Djimy.