How long will the deficiency amount owed after a repossession settlement on a motorcycle show up on your credit report and is there any way to get rid of it?

get an attorney to contact them with nasty letters

I contacted an attorney and was told that there is nothing we can do. The company is reporting this settlement as a charge off, which is apparently the worst thing to have on your credit report. This is really ruining our lifes. We were even denied car insurance because of it. Any ideas to how to go about dealing with this or what our rights are would be a great help.