The question mark can work perfectly well in this instance, although perhaps some early English learners should avoid such a construction because the intonation, the delivery, must be correct. It does need another puctuation before the dreaded question mark but that's not why you deemed it incorrect- I'll leave you to think about it. It's your fault for not reading it correctly. Anyway, we all when writing these posts leave out or incorrectly put in bad punctuation.

Right, the question mark can stay but I'm afraid your exclaimation mark must go.