I assume that your "bank" has more than one platform - more than one type of financial firm - such as Wachovia BANK and Wachovia SECURITIES, as banks do not generally invest funds. Having said that, if any party did invest WITHOUT your authority, yes, you have a right to seek compensation. Most investment firms will have agreements, which if you signed, will contain a mandatory binding arbitration clause; banks will not. So, determine if you have such an arbitration clause to see where you should sue, and check piaba.org to locate an attorney in your area of Alabama.