Thanks for contacting PUBG Support!
I see that you are concern about why your refund was denied. Please be informed that, steam refunds may be refused in accordance with Steam's internal policies.
If a refund is possible, the refund will be completed in the mail and additional messages will be directed.
For any concerns related to Steam refund request, please contact the steam support team. If you have any other issues please let us know.
Thanks for playing PUBG and have a wonderful day!