My building is on ta quiet pavement with very little foot traffic, with the living room windows overlooking the pavement (and a nice park across the quiet road). I am on the ground floor and have plantation shutters in the living room. I have the shutter louvers open during the day as its the only source of light for the room. I am a single female and I live alone. This is my main living area and I am in that room the majority of time as I'm working from home.
There is an elderly man (perhaps late 60s) who has been slipping greeting cards through the mail slot on my front door for the last year, at least once a month. The cards are usually blank, though he has left a message and signed his first name with his address and phone number (his address is about 5 minutes walk away). Messages are fairly impersonal - how he likes my shutters and to have a nice day. I know who he is as I’ve seen him out the window walking away from my house after the card was dropped through the mail slot a few times. I generally ignore this. My problem is that he is now looking into my house from the pavement when he is walking by. Although he is elderly and probably harmless or lonely, I am very uncomfortable with this. I value my privacy and although I know a few neighbours, I mostly keep to myself. I do not want to make new local friends in this way.
Am I being unreasonable if I drop a letter through his post (given he gave me his address) ? Could you suggest wording for the message. I was thinking something like this:
“Could you stop sending me cards and looking through my window. I am uncomfortable with this. I’ll raise this with the police if this continues.”
My concern is he may knock on my door to apologise. How do I nicely put in my message that I don’t want to be friends.