Hi Rainasar,
you can do an MP inquiry but they will only be able to get you a status on your file which will be the same as on your GCMS notes. And if your MP isnt helpful they will just say the posted timelines are now 18 months and they really can't do much until the 18 months are over. As a matter of fact, they can't do anything even after the 18 months have elapsed. They can only request for immediate action to be taken once the time has elapsed but they may still not get a response from Immigration. It is the sad truth. And unfortunately or fortunately there are some people's applications in 2016 which moved fairly fast and that could be very well for a number of reasons and one of them I believe is because they are not sending all the files to NDVO. Their files are getting processed elsewhere in the world like Sri Lanka, Poland etc due to the high volume of applications at the NDVO. Seems like the same thing that happened to 2014 and 2015 people is happening to the 2016 applicants now. We were all waiting for a VERY long time to hear from them even after 13-14 months, our files were untouched nothing done on them. And then in the 16th or 17th month we get an interview letter and then wait longer to get the processing completed. It is the worst system in the world but really even if you do an MP inquiry or webform inquiries, they will look at your file when they get to it by queue. Totally depends on your luck who your visa officer is. If its someone with less complicated cases and fast then you will get through sooner but if its someone lazy with complicated cases, it is definitely going to take the full amount of processing time posted or maybe 3-4 months earlier than that. Hang in there...it will come soon!