Chafillas

Chafillas
 

Porque estoy hasta la madre con tus traduciones chafillas.

Because I'm fed up with your ******** translations.

I can't find a translation for the word chafilla.

Thanks for your help.

Incomplete or half ass or shoddy etc.

But a diminutive is used (chafilla, from Mexican chafa, cheap, trashy, shoddy) so it's toned down a bit.

For a Mexican ear, it's not necessarily "toned down"; it can rather mean that translations are so bad, that they cannot even be "chafas".
Many people here use suffixes "-illo", "-illa" with a pejorative meaning.

If I had to say the original sentence in English, I'd probably say: "I'm fed up with your lousy translations".

Thanks everyone. I should have thought of the diminutive.