We have received a few unreasonable inquiriers to use our painting services before, asking us to do this, add that, decrease price, etc… And in the end comment to us that we did not serve them well, and that it’s their rights to have what they want (when they have not pay us yet).
This is what we will do. Ask them politely to engage some other painting contractors in Singapore, since we were not able to provide what they are asking for. BUT, sometimes (like today) they would insist/demand on using us for painting their home.