This is how u deal with it, quite simple
1. If your using a offshore merchant account most of them will tell you to have your refund policy on your page, make sure your refund policy is pretty simple something like this "By purchasing from http://www.mysight.com you agree to our refund policy all sales are final and no refund request will be granted only exchanges"
this link gives me the error 403.... not sure if its my country blocking it , im in thailand, is it possible, to have it copy / pasted here . or to my mail , pm pls. very greatful if u can goblin, thank you.