Answer:
If I were you I would ignore them
"The people that drag you down are already below you"
Eventually they will give up and leave you alone
If you really must say something, dont lash out. It well let them know that you are affected by it and it will probably become worse.
我见过那个人。： wǒ jiào guò nà gè rén
你看过这个电影吗？：nǐ kàn guò zhè gè diàn yǐng ma
我没学过中文。：wǒ méi yǒu xué guò zhōng wén
ex: emotionally
just change the last part like ist, and stuff
