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to make a complaint
01
to express dissatisfaction or criticism about something
例
If you are unsatisfied with your purchase, you can make a complaint to the customer service department.
If you receive a damaged product, you should make a complaint to the shipping company.
She decided to make a complaint to the restaurant manager about the quality of her meal.
When the hotel room wasn't clean, they had no choice but to make a complaint at the front desk.
