when you can go o a judge and say....here's letter one, thirty days later letter 2, 15 days letter 3, 30 days letter 4 and finally when they didn't reply or take action on letter 5 I decided to file.
It becomes apparent they weren't taking any action.
Now if you file now....you state that well they didn't respont to my first letter and since they haven't responded withing 15 days to my second.... it just doesn't carry much weight.
Have they updated the reports reporting a new month of delinq after receiving your DV? If they haven't updated it then it could be TU hasn't responded to their request to delete the account....or note it as disputed.... if they updated more delinq after receivng the letter then you have them on that, but again I suggest you get HARD COPIES.
There isn't much on legal battles and such on MyFico but I might suggest you look at creditboards.com for help, they have some legal eagles over there to give advice. You really don't want to start that road until you have given the collection co so much slack that they condemned themselves.... IMHO you haven't done that.... you HAVE reached a point that I would take that info and dispute TU with their lack of DV to have TU delete it. If you really want to sue you need more evidence...and a good lawyer. They probably wont take it unless you have tons of evidence to substantiate your case....again....go for more....