抱怨拖沓
How many times do I have to tell you?我得跟你说多少次？
I'm getting tired of always having to remind you.我总得提醒你，我都厌烦了。
抱怨错误
I would like to make a complaint about your customer service.我想投诉你们的客服。
Your behavior at the party last night was unacceptable.你昨天晚会上的表现让我无法接受。