#11 Ask a question on BBC

This is my question

Hi, teachersIf you do something really hard.but the result wasn't like your expected or the situation was even worse.How I describe this sentence in few words or a phrase.waiting for your reply.thank you!

This is the answer that BBC'S teacher reply.
"Boy, that didn't turn out at all like I expected it to."
"I didn't expect that."
"Darn! I worked really hard on that, and it didn't come out as I expected it to."
"Oh, well, 30 hours of hard work down the drain."

I think it's a little not like what I wanna know.
because I wanna some short phrase but they still answer me a sentence.
maybe there is no words or phrases mean what I ask.