If you really dont like one of your neighbours then do the following:
keep hitting them on the head with your net-they will get angry at you.
Keep walking in front of them (pushing them) and they will get mad.
Go up to them and talk but when she/he says "so what do you want"(or whatever) and it says made you look(or the bottom one)press it and keep doing it coz they wont like you if you dont talk to them.
If you send them threat messages they will take it as a compliment and they will love it-infact sending any messages will be a good affect-oh and-animals cant read-thats why they like the letters.Anyway keep doing this and soon they will move away.