Well put. It reminds me of my father. Once, as a child, we went to Walmart in the morning to make a return, but the clerk refused. My dad calmly said, "No worries." Confused, I asked him why he didn't argue. He just said, "You'll see." Later that day, we returned at 6 pm and encountered a different clerk who processed our return without asking questions.
Never take no for an answer, but do it politely, then wait for the next employee shift.