回复：What can I do?

再加一条很重要的：
当矛盾激化时，也许有很丑陋的时刻，比方说他对你无根据的指责和谩骂。这时候一定要冷静。
1。绝不当场还嘴。这样会变成口水战，你的水平马上变成跟他一样。
2。静静的听完他要说的所有的话，如果有别人在场，说“It is getting personal, let's take it off line." 如果只有你们两个，马上离开现场或挂掉电话。
3。within 24 hours, think through the whole thing and write down in an E-mail, send it to your boss.If you want, you can also copy his boss.

Usually, he will come and appologize under the pressure from management and be careful dealing with you ever since.