You must diplomatically bring this issue your father’s attention and telling him that this cannot go on while it is still in your name because you don’t want take the burden of such a major sin.

We have a business in fruit & veg sector and my dad take control of whole the business and the business deals with interest and it owes a lot money to people that we buy our stock from. Im currently working for my dad and but the business is under my name and i don`t have any control of the business and i cannot bring the business in a halal path and to pay our debts faster or to increase.