I live in a small flat in an old house converted into 7 flats. Another elderly neighbour and myself (she is 76; I am in my 60s), have left what small amounts of groceries we can for the gentleman in his late 40s who lives in the basement flat, who is unwell and far from his family in Sudan. Among the groceries I have given him were included some jars of molasses. Recently this gentleman has been knocking at my door asking me to get more molasses for him. I tried to explain that things were a bit difficult for me at the moment, but he insisted, so I ordered 3 more jars from Amazon (which I don't like using), for him, at a cost of £12.30. A week later he came to my door again telling me to get more molasses for him. He took rolls of £20 notes from his pockets, but did not repay the £12.30. He said he would repay this when I got him some more molasses. I said 'But then you'll still owe me another £12'. He just said 'Yeah' and went off back downstairs. I ' m not sure how to handle this - he really isn't very well - and would be very grateful for advice.