Do I have a real case?

I work in Afghanistan for the Department of Defense. I have not been back to the U.S. for nearly 3 years. Finally, I was able to go home with my wife for the first time. Prior to my vacation I contacted Bank A (Trade...) and requested that some 10,000 be transferred to Bank B (Fide...) which is my primary bank. In compliance with my request Bank A forwarded the funds to Bank B. In effort; however, Bank A sent 20,000 instead of the requested 10,000. Upon realizing their error Bank A sent a request to Bank B asking them to send 10,000 (the extra funds) back. Bank A sent this request to two divisions in Bank B and subsequently both departments processed the request. At this point, because I had began spending my money, my account was overdrawn some 6,000 dollars. What exacerbated the situation is that it was all during Christmas time and my account stayed overdrawn for nearly 5 days. After correcting their error Bank B froze my bank account because it was seriously overdrawn for so long!!!? (They are the ones that caused the overdraft) After the account was frozen the next day my card linked to the account was frozen as well. All in all my funds were locked up for a week. This was during a 14 day vacation. The freeze on my account covered all of Christmas Eve and Christmas as well as the time before and after. Ok...these are the facts. So do I have grounds for a lawsuit...a real lawsuit. This is the first time I have ever felt like bringing a case against anyone. But...I want to know if I have grounds. Realistically I am extremely pissed off. This was the first time my wife and I were able to come back to the U.S. in nearly 3 years. I planned to do so much and see so much family but when we arrived all our funds were locked up. We were eating noodles and crap like that for a week and had to borrow money from family to put gas in the car just to drive around and visit friends and family. And to top it off when I was told '...oh Sir your bank account is frozen because your account was overdrawn...I wanted to freagging explode!!!!!!! Here they had made an error with my account and then froze my account like it was my fault. Again...do I have a real case? Some type of negligence?