If you received one answer, you'd use the first; if you received two or more answers, you'd use the second. Your use of 'such' is fine in both options.
What confuses me is why you want to say 'short and brief'. These two adjectives have the same meaning - "short" means "not long" and "brief" means .... well, "not long". Both could potentially even be seen as negative : after all, wouldn't you have preferred a fuller answer? I'm wondering if the word you actually want is "concise". This means that they gave you a short but comprehensive reply, answering your question fully and clearly in relatively few words.