Steam Konbini payment cancelation

[Hypheon]

I chose to buy a game on steam by the konbini method but later changed my mind and decided to buy it by another method. The thing is I can't buy it now because steam says I already own the game (even though I havent made the payment to the convinience store yet) Is there a way I can cancel the payment or do I have to wait 3 days until it gets canceled on its own?

[Sabstrakt]

Seeing that this post was 4 years ago, it’s most likely resolved, but in case people visit this page for an answer, I’ll write it down just in case:

First, go to help.steampowered.com and sign in to your Steam account. Then, go to the “purchases” tab. For example, if you buy Elden Ring, make sure you don’t go to the “Elden Ring” tab, but to the “purchases” tab.
Scroll down a bit and It will then show you all previous digital transactions you did on steam, either completed, I completed or canceled. And if the purchase you want to cancel is the most recent, it should be at the very top.
From there, click on said purchase and on that page, it will show you a button that says “cancel purchase”. Simple!

Hopefully this helps anybody with this niche issue like myself who struggled how to cancel their konbini purchase.

[Hypheon]

Thanks for answering for those who might need it! I believe I just let 3 days pass by. But that was from 2017 huh... time sure flies