Wachovia/Wells Fargo Wells Fargo Hijacked my 4k deposit!!! Claims check was not valid! Alexandria, Virginia

I opened a then Wachovia account on Thursday August 4th, 2011 and deposited a check from my Citibank account in the amount of $4,000.  I was told since they were converting to Wachovia over the weekend, it would take a couple extra days to clear and would be available by Monday August 8, 2011.  I noticed my the funds had cleared my Citibank account on the 8th but when I when I tried to make a withdrawal on the 9th I was told my account was blocked.  Upon further inquiry and tedious phone calls, I was told "someone' at Wachovia/Wells Fargo called "someone" Citibank and they were told the account # the check was drawn on was not correct.  I have provided numerous documentation from Citibank, reference letters from my Citibank branch manager stating my account has been open since 2009, and even a general ledger showing the debit from my citibank bank account.  Despite the documentation provided Wells Fargo continues to claim my deposit was from a bogus account!  They are not even attempting to investigate.  I am so frustrated!!! I need access to my funds.  If I hear the words "I'm sorry for the inconvenience" one more time, I'm going to scream!!  If you are sorry, return my money!