to give back less than the correct amount of money to sb who has paid for sth with more than the exact price 少找给（某人）零钱◆I think I've been short-changed at the checkout. 我觉得收银台少找我钱了。
to treat sb unfairly by not giving them what they have earned or deserve 亏待；克扣◆Poor after-sales service can leave customers feeling short-changed. 差劲的售後服务会使顾客感觉吃了亏。