The individual needs to effectively confront and respond to that letter. He needs a well-written persuasive letter that forcefully confronts that party with his own position and attempts to persuade that party to either moderate, post-pone or abandon the demand.
The Second Situation: An individual has a serious situation or problem and wants to confront and persuade a 3rd party - another individual, the government, regulator/authority, a lawyer, a bank, a corporation, an institution etc. to do something - to agree to his request for some sort of action or forbearance.
In order to accomplish this goal the individual needs a well-written persuasive letter that persuades the recipient to agree to his request.
These letters are confrontational letters. Letters that confront a serious problematic situation and attempts to resolve the problem exclusively through the use of letters.
To be effective this form of letter writing must usually be restricted exclusively to letter writing and not be augmented by verbal confrontation. This is because in many instances verbal confrontation gives a distinct and unfair advantage to the recipient of the letter.