Tata Motors — Fraud done by A & A Automobiles(Greater Noida)

Hi, My name is Himanshu Raghav. I had booked a Yodha 1200 CBC from A & A Motors(Greater Noida) on 3rd, Sept 2021 with the agreed on-road price of Rs. 7, 70, 000 and the delivery was done on 8th, Sept 2021, from that day onwards It all came crashing down. I am being harassed by the dealership for everything. I have listed the reasons below:
1). My vehicle was financed through Tata Motors Finance, the dealership told me that Rs. 7, 40, 950 was received by TMF, and the rest you have to pay, so I paid rs. 30, 000(Rs.7000 on booking and Rs.22, 050 on delivery day) but I was not provided the RO for which I kept requesting the dealership for over a month. Later, I contacted Divya Mam(through lots of contacts) in TMF and she provided through which I came to know that and the amount paid by them to the dealership was Rs. 7, 63, 950. SO, I contacted the dealership regarding this and they told me that they will refund me the excess amount [(7, 70, 000 (on-road price) - 7, 63, 950(TMF paid)-30, 000(I paid)] = -23, 000.
So, I was told that this amount will be refunded in a month in September but now almost three months and lots of calls, harassment later, I was given only Rs.4, 432. Now, they aren't picking up my calls and refuse to provide me with my refund. Please help.

2). The vehicle I was provided had almost 2000km on its odometer which we were told illogical reasons.

3). We were provided with only a single key and after requesting for multiple weeks, they replaced the lock but it was done so recklessly that the lock is very tight.

4). For registration they took over a month.

Now, I just want my refund in full for which they are refusing. Please help me regarding this.

Details:
Name: Himanshu Raghav
Email: [protected]@gmail.com
Vehicle: Yodha 1200 CBC
Dealership: A & A Automobiles
Concerned Persons: 1). Kushendra Bhaati (Sales Person) and his Senior2). Ashok Pathak