he is going to apply for an appeal and later may be sue the Wilaya (Wojewode) ....
Sue?Really for how much and for what and who all?in that case lot of law suits be filed when many western countries consuls refuse visa.Bro save your friend and your money and try satisfying the consuls requirement legally.You will never get any far with your law suits esp in Poland.APPEAL,yes you can try.Dont forget you apply in the consulate once or many times and that consular interviews maybe 20 people everyday with diff excuses and is better experienced.