As a non-native English speaker I just took that line to be a hilarious version of form letter response. "Your business is important to us" replies have been around forever.
If you want to stretch it a bit there could be a pun involving frame-up but I doubt it.
"I wrote to the Government, and they sent back a pamphlet on the repair and maintenance of frame houses"
I have the feeling that there is also pun in this sentence but I can't find it.