Not honoring two year price commitment

I am a long time Comcast customer who recently signed up to a two year price commitment only to see my rate increase after two months.  I contacted customer service once and the person was sympathetic asked me to not pay my bill and someone would contact me to fix the issue.  No one ever called back. I called today after my bill was paid on time to ask why it wasn't adjusted and the rep reference some small print in the two year price agreement that equipment charges are not subject to the commitment. This was never explained to me and even if it was is this really the way Comcast wants to do business by using a loophole to raise rates.  Has anyone else had this same issue with Comcast not honoring price and or service agreements. I am thinking about filing a claim with the consumer protection agency.