California franchise tax board illegal hold on my income for no reason sacramento California

I was just informed by my bank that there is a hold in my account of the entire amount.  The bank could not explain what was going on and they gave me a number to call.  I then found that the phone number was for the California State Franchise Tax Board.  After a lot of difficulty, I found someone who told me that I had not filed a California tax return for the year 1999.  I was completely flabbergated, as I have never worked or have income from California.  And why would they think I am responsible for taxes from 15 years ago even if I did have income?  They asked where I was working in 1999, and I told them I was our deputy consul general in Guangzhou, China.  They asked if I have any proof of that.  I thought I may have something which I wrote about China that year but in the meantime, the clerk told me she found my federal tax return shows a california address.  I explained to her that U.S. embassies and consulates in Asia all get an APO address for California.  It has nothing to with where my physical address was at the time.  Seeing the ripooff report, I wonder whether this was a simple (idiotic) mistake or a fishing expedition.  They should NOT think they can get money out of people 15 years later.  What about the Statute of Limitations.