Why was my tourist visa application returned by the Thai consulate in Canberra?

I noted someone had applied for their tourist visa too early. After asking a question about trying to stay longer than 30 days with pre booked flights and accommodation I was advised by many to just get the tourist visa.

I applied straight away instead of waiting as I assumed with all of the flight and accommodation info supplied my visa would be when I needed it.

I was amazed to receive a call from the consulate in Canberra and was told they were sending everything back and to reapply nearer to my stay. It only cost me the 2 reply paid envelopes. I am applying again next month for a stay of 50 days starting late November.