To make a bad situation worse by using a wrong or counterproductive method; to add fuel to the fire.
面对顾客的投诉，如果不妥善处理，反而采取强硬态度，那无异于负薪救火，只会让事情更糟。
When facing customer complaints, if not handled properly and instead met with a rigid attitude, it's like carrying firewood to put out a fire, only making things worse.
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