mistakenly issued a negative feedback for the seller how can I change this

[adi-czester]

mistakenly issued a negative feedback for the seller how can I change this
how sposub I change my opinions or I remove

[entegris]

Mozesz wystapic o anulowanie nieslusznej opinii

http://pages.ebay.pl/help/feedback/questions/remove.html

or here

http://pages.ebay.com/help/feedback/questions/remove.html