Accidentally clicked the purchase points button extra one time

I accidentally clicked the purchase button extra one time
last night.

If it is possible, I’d like to cancel the second purchase.

I just wanted to buy 1000 points.

I tried to reserve a conversation class. Since I didn’t
have any points, “you should buy points” was showed. I
thought it was the button to jump to the purchase page.

I clicked the button. The points were already purchased
then. But I didn’t realize it. Then the display jumped to
the purchase page. I thought that was the place to
purchase. So I clicked the button. But it was considered
that the second purchase.



You have 3 months to use the points. Why not just use them?