Tata Motors — issue with price of tata tiago xz petrol

Address:

Dakshina Kannada, Karnataka, 575004

Dear sir /madam,
When i took price list from auto matrix, mangalore, in november month for tata tiago xz petrol it was mentioned rs.612315/-. (Including insurance amount rs.21425) but later in december i came to know the price of tiago was down by 27000 plus. When i enquired the same through car salesman he said price was reduced by 20000/- and he told the will be less in insurance and we dont have to pay single rupee for insurance (Which was 21425).
But when i purchased the car. Tata tiago xz petrol /expresso brown on 24th december, what i saw was insurance amount is only 9000 plus (Instead of 21425). I want clearification or refund for difference amount.

Name~ pradeepraj acharya