USA, Canada / Obtain Polish Citizenship in US [4]

New to the forum. I read most of the threads about obtaining Polish citizenship. My situation is a little different. I was born in Poland and immigrated to the US at 5 yrs old in the 80's. Even though I know how to speak Polish I don't read and write in Polish. From all the reading that I have done it's a pain to apply for Polish citizenship. Is there a US based company or law firm that I could pay to obtain my Polish citizenship? Also what are the cost associated?