Hey there! After investigating this report we were able to determine that the offer you attempted to purchase was the result of a graphical bug. Our database showed that there was no instance of 500 Theonite being spent by your account today. While it may have looked like you lost Theonite on your end, refreshing your game by fully closing it and re-opening it should restore your Theonite count, if you have not done that already. We are now investigating the cause of this bug, and we will hopefully have it resolved as soon as possible!