Can companies remove money from direct deposit accounts once deposited without notifying an employee

Not legally. Most likely they would short your next direct deposit. A direct deposit account is a legally binding financial transaction between your company and the bank which manages your account. It can't be undone on a whim.

I think it really depends on what are the circumstances are but after deposited they cant touch the money.

there not allowed to unless that person filled fees in a municiple court to garnish your wages in wich case can be done by knowing your bank  name that you bank with so yes it's possible. I no that's not the answer you want to here But if it's not that case you might want contact the main branch and speak to someone that's over head accounts.  

there not allowed to unless that person filled fees in a municiple court to garnish your wages in wich case can be done by knowing your bank  name that you bank with so yes it's possible. I no that's not the answer you want to here But if it's not that case you might want contact the main branch and speak to someone that's over head accounts.