I had the same issue before sa second student visa application ko, 572 SVP, Feb 2016 intake ko, ni lodge ko January because I know 14 days lang standard processing ng SVP. Pag medical ko biglang nag request ng MTB test ang immi which took 2 months bago makuha result. So no choice I had to defer yung course ko July 2016, April na submit yung medical result, fast forward July wala pa rin visa result. July 25 intake ko, July 14 na wala pa din visa ko, I asked my migration lawyer to follow up kasi lampas na sa 14 days processing (puede na i follow up pag beyond processing time). Ayun kinabukusan Visa grant na. Minsan kailngan I follow up immi, its your right naman specially pag lumampas na yung standard processing time.