To whom it may concern,
To whom, though?
My toaster is broken. I bought it last week at your store and it doesn't work.
Which day? Which toaster? Which store?
I am very angry. This is the worst toaster I have ever had.
Cut. This is the line that gets you filed under difficult.
It burned my toast and then it stopped working.
I want my money back.
How much? By when?
Sincerely, A very unhappy customer
No name, no way to reply.