Law / Can a foreigner appeal against prokurator (prosecutor) decision in Poland? [11]

hello
i'm a foreigner and i living abroad ,i have a legal case with a polish citizen (fraud).
i sent my appeal to prokurator in poland by email .
unfortunately the decision of the local prokurator was unfair ,although i introduced all evidences which prove my rights.
so , is it possible to appeal against prokurator decision ?.
thanks for your help