Retrieving Certificates From Parents

First try to settle the matter amicably by surrendering before your parents, say "Sorry". Let them beat and abuse you, after all they are your parents but they will repent for abusing your and also repent for having beating you. Ultimately you will get back your certificates and also love from your parents too.

File Police complaint and get duplicates from University

you can give a complaint to nearest police station to seize your documents which are illegally kept by your parents. if they have burned it then you can apply for new copy from concerned offices. you have to make an affidavit stating the facts, attested by a first class magistrate , a paper publication for getting new documents

what's ur age?