I got a phone call today from American Consumer Credit. They said they just wanted to let me know they have written off my loan, and that I now owe them zero. Kind of odd, since I haven't paid them back any money, including the principal of the loan. I asked her to follow this up in writing, which they said they would do by email. I have not received an email as of yet.
I had sent them a fax, stating that I could not find that they were legal in california, nor could I find any legal business information for them in the state of Delaware, where they are supposedly located.