Hindi for "I said what I said"

Hello!

I'm a super super beginner hindi speaker, and I often exchange words/phrases/insults with my friend who speaks fluently. Because I'm a beginner, I often mess up grammar/pronunciation or say something that just doesn't make a lot of sense.

Whenever I make a mistake or say something confusing, my friend asks "what?" (as in "that doesn't make sense" as opposed to "I couldn't hear you"); what is a playful hindi phrase I can respond with - something along the lines of "I said what I said" or "you heard me".

Thanks for the help :)