YOU SAID:

I just called my partner and told him to do something, so I didn't call him.

INTO JAPANESE

私はちょうど私のパートナーに電話して、彼に何かをするように言ったので、私は彼に電話しませんでした。

BACK INTO ENGLISH

I didn't call him because I just called my partner and told him to do something.

INTO JAPANESE

私は彼に電話しませんでした、なぜなら私は私のパートナーに電話して、彼に何かをするように言ったからです。

BACK INTO ENGLISH

I didn't call him because I called my partner and told him to do something.

INTO JAPANESE

私はパートナーに電話して彼に何かをするように言ったので、私は彼に電話しませんでした。

BACK INTO ENGLISH

I didn't call him because I called my partner and told him to do something.