A year ago someone came door to door offering to clean out gutters for £20. I agreed and they also did some roof repairs for me. They gave me a quote for replacing the roof too, but I couldn't afford it (although it seemed reasonable). Today (Sunday) he arrived at my front door saying that he had been cleaning out gutters again for people on my street and although I wasn't in, he had cleaned mine too - and did I want him to come back every year or every 2 years? I said no to the yearly/biennial (?) visit and as I was on the phone at the time asked him to leave me his number. I feel sorry for him as it must be a difficult job and difficult time of year (perhaps - I don't know really) but if I had wanted this job doing, I wouldn't have chosen to have it done in January with all the post-Christmas bills. However, if he has done this job, I feel bad not paying him - but there again, although I tend to believe him, I don't know for sure that he actually did it - and in any case I didn't ask him to. What a quandary! Any suggestions?