I am new to this. I need some advise. I just purchased a 2017 model X that served as a demo and was sold both the premium nterior package and the sounds system and HEPA filter all included. The price tag for thèse options was over $9500. To my surprise I don’t have the heated seats in the back nor do I have the heated steering wheel and the heated wipers. I have the front driver that opens by itself only. Could someone be able to give me more details on what exactly the options are on both packages and how can I confirm all the options are ie. HEPA and better sound system.