กล่าวขอโทษลูกค้าและแก้ปัญหาให้เสร็จ

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ขอโทษลูกค้า

These simple steps may help you make your angry customer happy.

approach the angry customer and ask what they are displeased with.
Usually restating the issue they are having will help to calm them. For example, say, "I can understand your frustration with...