We are having works done on the house,scaffold up etc and a young lad with more front than dolly asked one of the builders to let him in saying we had asked him to come round to do some painting. He had a brush and paint pot and knew my name somehow. Although I shred letters I may have had a parcel with my name in the recycling bin. Luckily my builder rang me to ask if I had sent anyone to paint and I told him no, don't let him in, but I can see how this could have worked in some cases especially on chaotic sites where there are lot do operatives who do not know each other and the job is not being managed properly. Reported this guy to local police but beware of these tricks.