Nissan Motors — Charging extra money for car delivery

Hi I am from indore
I had booked nissan magnite base in dec 2020 by doing a cash payment of 10000/- at indore nissan dealership.
Today's I got a call from a person who introduced himself as employee of anand nissan indore dealership and offered me that if I am interested I can get immediate delevery of the car because few booking are cancelled. But the twist is I will have to pay current market price which according to him is about 660000/-.when I enquired that upon booking they have issued a letter mentioning on road price to be around 610000/- . He said that we can negotiate a bit of price but in any case I will not get delivery in old price. I have recording of the conversation also.
So I need help in understanding that is it any scam to make money by dealership or what and how I should react in this matter??