Your company is legally obliged to inform the bank that you have resigned. The bank will then freeze all of your assets until you get a new job or settle all your outstanding debts. Unfortunately, that's just the way things are here in Doha. My advice is get as much as you can transferred to your home country, or take the cash out of the bank before your company informs them of your resignation. The bank may also request a travel ban on you if they think you are going to skip without paying them.