Get New PIN

Go to the bank and put a password on the account

Talk to your mom about it. He may deny it, though, so be prepared for that. My mom once took $200 from my account (money was supposed to be for emergencies like vet bills for my cat or schoolbooks if something happened to mine), and flat out lied about it. But, make sure you get the proof, then go talk to your mom about it.

Maybe I have been an adult for too long, and maybe you are too young, but unless the person is your spouse, never give anyone that kind of access to your accounts. Doesn't matter who they are outside your marriage. Heck, I don't even give myself access to transfer money out of my kid's accounts electronically. The only way I can pull money out of their accounts is to physically go to the bank. And if I am drunk, I doubt they would let me do anything but get arrested for public drunkenness.

That sucks. sounds like you might have to make a "change" there.

This is one time you don't want a lot of money in your bank account

try having another account at another bank they don't know about so that they supply that account and you put 25% or less in that account so if this happens again you would still have quite a bit of money

Until you're 18 and can open an account that no one but you can access, you'd do about as well by just burying all your money in the backyard. If you're already 18, open your own account asap. Joint accounts are generally nothing but trouble, and a third party (like your parents) can still make deposits into your account, just not withdrawals.

Family "business"

It's not cash until it is taken out of the bank account.. So he took your money. Unless your bank account is a piggy bank full of cash, then yes you are correct