I like the idea!
Similar in someways to the concept of sending the next tax demand back with a note along the lines of ‘Thank you for your offer but just at the moment , due to other financial commitments, we regret that we must decline your request“.
I was clearing out my spam folder and noticed a message with the above header, sometimes even spam can be interesting! The contents were less so; it was some sort of scheme to make lots of money returning phone calls….