expression, godan verb (-u)
that's not what you said; that's different from what was promised
Used when someone's current statement or situation contradicts what they previously said or promised, often with a sense of complaint or surprise.
昨日の説明と話が違うじゃないか。
That's not what you said yesterday, is it?
契約内容と話が違うので、
This is different from what was promised in the contract, so I can't accept it.