I operate a small home-run tech support business. I have a neighbour who asks for advice, support, instruction at least a few times a week. Usually, they are small, no-brainer questions, that I didn't mind answering. Recently, he began to call me from his workplace with computer-related problems. I decided to let him know that I can no longer provide free computer support/advice. Our relationship has now soured. I know that I should have had more rigid boundaries, but I was trying to be neighbourly, and the support was not difficult. Any (free!!) advice on how not to be the neighbourhood's computer free go-to person? Thanks in advance.