YOU SAID:

i don't like that they did that

INTO JAPANESE

私は彼らがそれをしたのが好きではない

BACK INTO ENGLISH

I don't like they did it

INTO JAPANESE

私は彼らがやったのが好きではない

BACK INTO ENGLISH

I don't like what they did

INTO JAPANESE

私は彼らが何をしたか気に入らない

BACK INTO ENGLISH

I don't like what they did