Law / Question on allegro.pl. Have I actually paid? [5]

[Moved from]: Allegro Problem - I bought the same item 3 times!?

Hello! I've recently started to use Allegro and I just decided to buy one item.
My surprise was when I noticed I bought the same item 3 times! I don't know what to do now! Any help?!!!
Of course I don't want to pay for the 3 items, just for 1! I'm also not so sure how to pay it.