Sorry that the classifieds have given you grief. Look at my trader rating, I assure you that most of the dealings on here are satisfactory. Everyone on that list in my trader rating is great to deal with and I have dealt with several of them 2 and 3 times.
Although you may have been a little forceful in your opening email, it doesn't diminish the fact that you seem to have a long list of issues that should have been disclosed to you. Looks like you are going to have to spend the money to fix it up yourself, but find out who this guy is so if he comes back to the country you can track him down.
Lastly, retaliatory feedback is not allowed on this site. Please report your problem to the admins and they may revoke that negative feedback.