There are common strategies every copyright extortionist uses:
1. They depend on people's ignorance of the legal system. Most people are legally illiterate. They cannot "press charges" because this is a civil matter, not a criminal matter.
2. Most people are unaccustomed to legal conflict and go to the natural tendency of fear. Some degree of fear is okay but some people are irrationally fearful.
3. A lawsuit is certainly inconvenient. An out of state lawsuit is even more inconvenient. A copyright infringement lawsuit requires it to be filed in a federal court. However, the people who have the least are often the least likely to receive a lawsuit. Also, a "win" generally means a "paper win" not general a practical win in that they actually get money. That is why lawsuits in smaller cases never go "all the way".
4. Persistence is their best weapon to psychologically wear down victims. It is an inexpensive strategy to send periodic letters and emails.
5. Filing lawsuits are expensive and require real money. It is also fraught with uncertainty. As such, it is a last resort. Time is on the accused side upon receiving the initial letter.
And regarding support, the forum info is free but it is limited and not customized. I am not a lawyer but I probably know more about this matter than most lawyers in the U.S.
http://www.extortionletterinfo.com/eli-phone-support-call-with-matthew-chan/There is no one definitive recommendation because people have different resources, capabilities, and risk tolerances. However, the cheapest way if money is an issue is to ignore it for 3 years. It isn't necessarily what I would personally do because it has pros and cons but it is a legit strategy. You can't go to jail by not responding. There are additional things that can be done but I have given some broad strokes.