This is a really good question as some people have run into something similar. When you request a refund, it takes a while to process, but the store will sometimes allow you to purchase the game again even though the refund isn't processed yet. If you purchase the game again and THEN the refund gets finalized, you will lose access to the game and only receive the refund for one of the purchases. If you ever refund something by mistake or something along those lines, do not purchase the game again until the refund finalizes. I hope I explained it easy enough. Let me know if there's anything I can help clear up.