1. If you made payment already, and you again create new order and pay again.
That is not duplicated order, because you made on different order id, in this case, if you did not use our premium key, we can offer you refund with refund fee ( it costs 35% on each orders)
If you dont want to refund on this order, you can use premium key to get more extra premium date.
2. If you pay twice on same order id, that is duplicated payment. we can support free refund on your payment.
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Please create ticket or send us an email [email protected], we will check your problem case by case.