I''m 18 and I moved out of my parents'' house. Can I sue my parents'' for access to my custodial bank account in my dad''s name and for my belongings?

The bank account is still in my dad''s name because he was too lazy to take me to the bank to change it to my name. The money in the account is mostly from my paycheck and the remainder is birthday and Christmas money from over the years. All of the belongings I want to get are either gifts or things I purchased with my own money. They keep saying since it is their house, everything I left is theirs.