Some people here are recommending that you leave the account open with only $100 in it, but I would advise against that. They will overdraft that account and then you will have to pay fees. Open a new account with a new credit union, move your money into that account, and then notify your parents that you need to close the current account. Do not give them the opportunity to clear out the account before you move the money. If you are willing to still give them money from time to time, let them know you can Venmo them the cash. Honestly, I think you need to stop giving them money except for your portion of the cell phone bill. They need to learn to live within a budget.