there was a note that any larger amount sent to the address will not be refunded.
Some wallets/exchanges don't let you send below a certain amount. If you overpay due to that, then your payment will be accepted, but that small amount will not be refunded. You also won't be refunded if you're banned or change your mind about paying. But accidental overpayments are refunded.
Thanks for the clarification. I appreciate your thought in this case. And thanks for refund the amount OP sent by mistake.