Wow interesting! I think 3 months is way too soon. I asked the embassy where my finance lodged about a decision at 9 months (timeframe is 9-12 months) and got the still processing standard response.
I am not surprised about the agent not having a out of office on. In Australia alot of places close for Christmas so we just know do not contact anyone until January 13 (6th if you are very lucky). I deal with accountants and they are all returning on Monday.