I booked an international flight but had to cancel it, they gave me credit (less the insurance I bought), and they charge you usd$300.00 to re-book. Today 3/6/15 I called them to use my credit, but I wanted to take my son with me, they told me I could only use it for international flights and use it only for myself, I told them that the email I got does not specify if I had to use it on an international flight and does not mention either if the re-booking fee need to be paid separately (they don't take it out of your credit), so I decided to loose all my credit, but I was not going to use only usd$500.00 of my credit, pay them 300.00 separately, loose 800.00 plus buy separate ticket for my son, in other words you have to pay them usd 300.00 to use your credit.
Carolina, the exchange policies come directly from the individual airline with whom you booked with. As a travel agency, we are mandated to follow those rules of the ticket. Each airline has their own exchange fee which is always collected and not deducted, and tickets are never transferable and does mention this in our terms and conditions.