Volkswagen India — VW Dealer is not providing invoice for the full amount paid by Customer

Address:

Ramani Cars Private Limited, Tirunelveli, Tamilnadu & Ramani Cars Private Limited, Madurai, Tamilnadu.

I purchased VW Taigun 1.0L MT, HIGHLINE, July 2022 Model from Tirunelveli (Tamilnadu) dealer through their Madurai, TN branch.
The sales contract form signed and the vehicle was booked on 07th Feb 2023 at Tirunelveli VW Dealer.
As per the sales contract form and also as agreed by TVL Branch Sales Manager, the final price for the vehicle was fixed to Rs. 15, 65, 000.00.
I paid Rs. 15, 65, 000.00 digitally (65000+255000+500000+500000+245000) on 07th Feb, 10th Feb & 11th Feb '23. Since TVL Branch was not having 2022 Model, Candy White colour TAIGUN 1.0L MT HL, in their stock it was arranged from their Madurai Branch,
The vehicle delivered formally at Madurai on 11th Feb '23 and subsequently at Tirunelveli on 14th Feb '23.
Received Tax invoices and RTO e-fee receipt on 14th Feb & subsequent days. TCS is awaited.
The dealer provided account for Rs. 15, 20, 924.00 by means of Tax invoices and RTO e-fee receipt.
The account is short fall for Rs. 44076.00, when I checked with Dealer, they gave the response in the reply mails. Please go through the attached mails for better understanding.
I have tried to explain them in long chain of emails. But the response was same. So I have taken into Customer Care in Cc and accordingly CCR 11491875 has been raised. Till this date, this CCR hasn't been closed.
Please intervene effectively in this complaint and resolve it reasonably. Expecting your earlier action on this.