Warranty problem from factory

On 2014/01/18 I bought a Nissan Qashqai 2 lt limited edition and since then the service off Nissan was very bad.they first take more than a month for my tow bar then they fit maybe after a month and then I was alway asking for nr plates and license then the salesman also take his time.On the 17 Dec 2014 I got home and my cars battery was dead took it in to battery center they say I need a new battery.I go to Heidelberg Nissan just o find out the warranty for my car started in 2013/06 /20 .Sinc the 18th Dec I'm keep on asking to sort out my warranty and then till today is only promises and I only drive Nissan no other car but the service is bad. The Vin nr sJNFBAJ10Z*** also the warranty book and needed documents where not filled in. they did give me a cheque for the battery.I had make couple po fone calls and speak to Debbie but she make promise wil send me emails and stuff but nothing happens and today I called again and leave a message but no response I tols the lady who answer the fone it's urgent but they don't care.This caris also very under power I have to go to third gear with a small trailer pleas let someone from Nissan sa contact me