wanted to buy 1 pair of trainers from seller on buy now but i must have clicked twice so my bill is for 2 how can i amend this or is it the seller who has to. i want to pay by paypal now but only for one pair can i amend from my end or wait until the seller does so i have sent a quiestion to seller telling of my mistake be easy on me only just joined and thought it would be quite easy to change .