Tata Motors — Delivery of new car

I have been told by the dealer that TATA ALTROZ diesel vehicle will take only 2weeks for delivery. I have booked the car on 20th October 2020 in Schakralaya Motors Neyveli, by paying down payment of 21000. On road price in my town is 10, 17, 001/-. I have paid another down payment of 201196 and remaining 794805 in finance. It's been more than 3weeks now there is no proper update from the dealer when car will be delivered. Without allocating the car our dealer has asked the TATA finace team to release the full payment of 794805, now I don't have any proper update from dealer and monthly emi will be starting from December 2nd 2020. My family is total upset with my decision for booking this car, this is my first family car.