voucher code can't not use

first i exchange a code from razer gold and silver because i spend a lot of money on that and i place a keyboard order pay by my card and i write all the bank details when i after pay the shipping fee my order has been canceled. The customer support said my payment method can't verified. So i try another method to pay and my code is already used i can't use it. This make me so angry because i spend around 2000 Pounds on razer gold and silver and they trend me in this way.