Kotoba no Hibiki

I said I’m sorry! 

By

A: You’re late.
B: Sorry!
A: Do you know how I’ve been waiting for you?
B: I said I’m sorry!

In this situation, what should you say “I said I’m sorry” in Japanese?

B：だから、ごめんって。

Note: This is not a word-for-word translation.

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A word-for-word translation

B：ごめんって言いったでしょ

This phrase is used as well, but it might sound like you’re trying to pick a fight.

And you shouldn’t use this expression directly in a business setting.
You should avoid showing the nuance of “I said”, and try to show your sincereness instead.
For example, 本当ほんとうに申もうし訳わけございません。