How can I restrict gift cards to certain countries and manage refunds?

[Beadedplanet]

Okay I have a few questions. First of all, how can I restrict my gift cards to only certain countries? I have my shipping set to only US, UK, and Canada, yet I sold a gift card to Germany. I do not know how to fix it. 
Secondly, I issued a refund right away for that gift card and now my account is in a negative balance. Why did it do this? Is there a way I can even contact Shopify to sort this out? Please help! 

[JoesIdeas]

You can restrict actions on your site based on the visitor location.

For example, if visitor is browsing from Germany, then hide or disable the add to cart button on the gift page.

This guide shows you how to get visitor location: How to Get Visitor Location on a Shopify Site, use that code but instead of the action being to show a message, have the action be to hide the add to cart button.

About your second question, if you accept a credit card payment, you get charged a transaction fee by the bank handling the transaction. That charge is not refundable (the bank / visa / mastercard, etc still had to make the charge, regardless of what happened after the transaction).

Hope that helps.