what you're saying
That's what you're saying.
Lo siento, no entiendo lo que estás diciendo.
Sorry, I don't understand what you're saying.
Escucha lo que estás diciendo.
Listen to what you are saying.
Think about what you are saying.
No entiendo del todo lo que estás diciendo.
I don't fully understand what you're saying.
Lo que estás diciendo no tiene sentido.
What you're saying doesn't make sense.
No comprendo lo que estás diciendo.
I don't understand what you're saying.
Piensa en lo que estás diciendo.
Think about what you are saying.
Presta atención a lo que estás diciendo.
Pay attention to what you are saying.