He cleaned my windows for the first time today after doing my neighbour's and knocking on the off-chance. The Spidey senses started tingling a bit when I politely pointed out to him that he'd left his stepladder up in the middle of the road and cars were having to stop and wait to go past it. He'd done it on purpose apparently - something about ladders on top of his van? 
Then he started texting me this evening. It started off normally and then got a bit strange. He wanted to message me pretending it was time for him to come back again, 'to build his confidence'. I thought he had a new automated reminder message system he wanted to use but no, it was just him sending a text. Then he wanted to try it again.
This guy has my address and my phone number and it's only me and the kids at home. I'm a bit freaked out. Any ideas?