Fifth Third Bank Deposited 3 mon USPS money orders, several days after deposited they took the money orders out as a return. Streetsboro, Ohio

I have deposited 4 USPS Money Orders into my checking account.  The first USPS Money Order that was deposited was on 02/25/2013 in the amount of 899.55, the teller checked this money order and confirmed that it was a good money order.  Everything went fine with this money order.  On 02/28/2013 I deposited 2 USPS money orders for 978.55 each totally 1957.10, which were checked by the teller as well confirming that the money orders were good and legit.  On 03/01/2013 one of the money orders for 978.55 was listed as returned deposit item, mind you there were 2 deposits that day of the same money order and they were both checked to be good and legit.  The other money order remained in my account.  On 03/01/2013 I deposited another money order from my client for 978.55 which was deposited into my checking account.  On 03/06/2013 two USPS money orders were taken out of my account and returned leaving me with a huge negative balance.  These are USPS money orders, they were all legitimate money orders as the tellers checked them before the deposit.  Now not only am I in the negative with my checking account, but I also have outstanding debits that will be returned and I will have to pay the fee.  This is the banks fault, as they checked the money orders and they were good and legitimate.  I want my money returned to my account immediately.  The total owed to me is $2,935.65 please feel free to contact me regarding this matter.