The right of the bank to freeze account and EOSB against a loan

The bank had held my account 20 days in advance of my EOSB After I got my new visa and salary letter within the UAE.

The bank had unfrozen the account but blocked the full amount of EOSB and asked me to provide a confirmation letter, which I feel is totally wrong.

My loan amount is even half of my EOSB. Can I approach the banking court of the UAE about freezing the account and holding my EOSB?