Then you can use something like “I’m sorry but I’m afraid I just can’t do that.” It’s a little more direct, and the “can’t do that” does great double duty. By expressing an inability to perform, it can trigger the other side’s empathy toward you. “I’m sorry, no” is a slightly more succinct version for the fourth “No.” If delivered gently, it barely sounds negative at all. If you have to go further, of course, “No” is the last and most direct way. Verbally, it should be delivered with a downward inflection and a tone of regard; it’s not meant to be “NO!”
