What a ridiculous letter (yours, not theirs). I would happily instruct my team to discard this without further action if I ran the group responsible for responding to junk like this.

This is *not* how to write a letter to elicit a useful response. In fact, it is somewhat close to a textbook example of how not to do so.

The delays with these miles posting are notorious, but there are far better ways of actually achieving a result than this.