No - at the time I used forums (think creditboards or something like that and others) which have very helpful "armchair experts" that give excellent advice. Lots of form letters/response letters can be found and modified to suit your specifics. Many good strategies can be found and adapted down to the specific collection agency, etc. One of those things all the info is easily 'googled' and just gotta put in the hours reading and understanding how it all works, then use it to your advantage.

It's basically trying to get them to trip up and make a mistake - and it blew my mind how often and unabashedly these collection agencies would! Hell even BofA and Chase violated before they sold the debt off and I got an immediate removal from my report and the debt wiped away / no more collections (I was happy just to make things 'disappear' in these instances..didn't put money in my pocket but at the time is was a huge win, as one can imagine).