my daughter purchased the same template twice. how do i get credit?
You need to open a ticket with support from the purchasing account.
Please be aware that any refund issued will only go to the account which made the duplicate purchase.
Consider situation as having double advantages. 1. For author - it is extra money. 2. For you - lesson to be more attentive. Attentiveness is a useful feature. It helps in life. 
indeed. well played, sir. well played.