I once had an experience like that where I ordered for home theater on Konga online shopping mall. I got the product ordered for in good time but we had issue with our electricity in my area then so I could not test it. Eventually when the the light was restored, I discovered the remote and one of the speakers is not working but I couldn't return it again because the time to return it has expired.When some mistakes has been made by the seller, usually buyers are returning it. But for me unless it's something that is really expensive, I wouldn't dare to return it because I have to pay for the shipping fee to return it back.