Investment gone bad

<p>My father invested a lump sum with standard bank a few years ago, he was then sent a letter stating his balance and when he can come withdraw. He went and withdrew a few thousands and told then he will get the rest when the full amount has matured. little did he know that when he goes back he was told that "he" had taken his money. the person who handled this has apparently resigned and the company says they cannot help. what steps can we take to get his money back as he is suffering from stress regarding this whole matter.</p>