Auriana Bug

Time: 3:30 pm EST
Frequency: Happened Once
World name: Cactuar
Character name: Cecilia Browne
NPC name: Auriana
Monster name: N/A
Class/Level: 50
Party or solo: Solo
In-game time: 3:30 pm EST
Area and coordinates: Ravenant Toll
Steps:
1. I just got 900 Mythology so i could get my plus one on my relic and went to Mor Dhona
2. I want to Auriana to buy 3 of the Thavnairian mists
3. I clicked on the Allagan tomestones of Mythology (DoW)
4. I clicked on Others
5. I clicked on the Thavnairian mist thinking I bought it I clicked it again for another. Then on when i went to buy the third one it said I had insufficient tomestones of mythology.
6. It ended up that I bought 1 mists with 300 mythology and by bug it gave me the Valor Coronet (PLD helmt) for 495 mythology. It didn't change tab I was still in Others item tab.
4. Can you please help me. I do not want or need the Valor Coronet. I would like either the 495 mythology im out or Thavnairian mists.

Connection Specs
- Comcast
- Netgear

PC Specs
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Laptop Model Name: ASUS
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Gamepad Manufacturer:
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Browser Information
- Google Chrome
- Internet Explorer Version: Mac