Well.....DUH! What took you so long to figure it out?
In your rush to condemn this "seller" - you seem to totally miss the lack of ethics of someone (that would be you) who would would feel entitled to get links from a forum without having to "waste" any of their precious time contributing to the forum....i.e., "forum trolls".
You didn't build any reputation or establish any credibility - just tried to game forums for your own gain. Looks like you lost.
Coming to a respected forum to say you were scammed while trying to scam forums is probably not one of your better ideas.
I fell for their link building service. They have strung me along for a year now and clearly they are nothing but a scam company. I warn you, stay away from this company.