We send little thank you postcards to people when they give us a donation. Hand written, nothing fancy, nice pictures of people cycling and stuff on the front. You know, just to show we appreciate the support. Periodically this sort of thing arrives in the post:

There's a whole stack of them. They all have complete addresses (under the bit of paper I used for privacy reasons), are perfectly legible and have appropriate stamps on them...and the wonderful postal service we have in this country sent them back to us instead of delivering to the specified address.
You are the postal service. It is your job to deliver mail. Seriously, is there no end to the lengths you go to to fuck that up???

There's a whole stack of them. They all have complete addresses (under the bit of paper I used for privacy reasons), are perfectly legible and have appropriate stamps on them...and the wonderful postal service we have in this country sent them back to us instead of delivering to the specified address.
You are the postal service. It is your job to deliver mail. Seriously, is there no end to the lengths you go to to fuck that up???