Love From Louisa

Dear Farmer Giles,
Your farm is muddy and mucky and messy. Please clean it up at once!
sincerely,
Disgruntled!
Poor Farmer Giles… No matter how hard he tries to clean up his farm, he receives an anonymous letter of complaint.
Who can the mystery letter-writer be? And what will they do when Farmer Giles becomes fed up and makes a sign saying: ‘If you don’t like it, you can jolly well clear it up yourself’?