Answer:
This cannot be considered fraud because gift cards are not legally money or money equivalents. All you can do is contact the issuing company and file a complaint with them.
Sadly, this type of scams have become more common lately. Even the FBI warns consumers that they need to be extra careful when buying a car online. They even have a website where you can file a report since it is considered a federal crime, but you must have legally paid for the car somehow.