We have a veternarian that we took our pet to in 11/2003. The total due at that point was close to $700. Fast forward to 8/2005 - since that time we received no statements, collection letters, etc, and my wife feeling bad about the original debt sends a check for $100 (which includes our then current address at the time). 6 months later we move from TN to MN, with mail forwarding in place for 1 year. Jump ahead to July 2008 when we receive a letter from a collection agency demanding a balance of $1461.09.