I would suggest you leaving calling and personally visit the dealer ship, The Toyota SAPS system is the one that makes sure what delivery month you get after your booking order is made, An individual at a dealer ship cannot commit your cars delivery month. How ever Toyota Central motors is the biggest dealer ship in terms of sale and has got some privileges on earlier car deliveries. About they being greedy yes they promote investors, The reason being they need more sales to meet monthly targets. About registering your car from the dealer ship id recommend not to take deliveries without registered reason being safety, And the dealer ship cannot force you get a trakker or insurance its totally your choice. How ever insurance companies do force trackers in Corolla after 2010 model. I couldn't get my 2011 insured because of not getting a tracker my car was previously insured without a trackker but the renew policy has differed.