[turkeygizzard]

A couple of things:

It sounds like you're asking two (or more) different questions. Your title implies maybe getting back at your employer. I think many of us have gone through similar feelings, but ultimately you should do what's best for yourself and not necessarily what'll make you feel good in the short term (checkmating / petty revenge). In my experience, typical advice is to not take a counteroffer from your current employer. Will you really be satisfied at work if they give you that raise? Will you go through the same issue in another several years?

As for the resume development and lack of responses - maybe try applying to worse-paying jobs, and see if you get hits. Take the recruiter calls and find out what it was about your resume that they liked. You could even go so far as to say you were hoping to get a better-titled position etc and see why they say you're not qualified. You can use all this to better edit your resume, or go develop the needed skills at your current work.

I've also been contacted by headhunters in the past, and with just a little bit of prodding, they're very happy to critique and edit your resume because it's in their best incentives to do so.