YOU SAID:

did i tell u to do that.....

INTO JAPANESE

私はあなたにそのことを言いました.....

BACK INTO ENGLISH

I said that to you .....

INTO JAPANESE

私はあなたに言った.....

BACK INTO ENGLISH

I told you .....

INTO JAPANESE

先ほども言いました .....

BACK INTO ENGLISH

I told you .....