I wish you and everyone else who has to write these legal replies can open source these letters so that the process of going up against these large enterprises doesn't sound so intimidating.
To decrease the intimidation, you’re much better off simply calling someone who already understand the nuances of the particular law which governs your unique situation and paying for a couple hours of their time.
If your experiences were more made more public, as to the exact process, people would be less scared about beginning their own process of fighting back.