Hyundai Motor India — bad service at modi hyundai thane

Address:

Thane, Maharashtra, 400607

I am writing out to you because i have had the worst service experience with my recent visit. Can't believe this is what i am getting from hyundai. I am going to send the same mail to hyundai india, because modi hyundai is clearly the most pathetic service ever.
I own hyundai excent, and had come to your thane service center for my regular car servicing on october 27th. The same day i also took your amc, which now i regret highly. While handing it over your service guy asked me if i had any issues which needs to be addressed, to which i stated the following two:
1. The brake light panel on the rear windshield makes a continuous noise while driving, possibly because it has become loose.
2. The front seats makes noise while driving, possibly because the bolts/nuts needs to be fasten.
I believe these were the most simple issues any service guy would come across.
I was given a bill of 9k+ for these problems in my car. Which he gave the explanation in a very poor language. Nevermind.
I was given the handover of my car next day i. E 28th which was earlier promised on 27th itself, but that's the least of my concerns.

On 28th i enter your service station at 1pm and leave at 3:45pm. I am guessing this itself is the proof of how poor the service is. Pathetic sounds good here.
I get my car in the following condition:
1. Brake light panel on the rear windshield broken. Now it makes more noise then before. No explanation why it was broken.

2. Seat noise unresolved

3. Scratches on the left side of my car starting from driver's door to the back doors.

4. Oil patches on the windshield.

5. Keychain attached to my key remote - stolen.

6. 2:45hrs for the delivery to happen.

Can you imagine scratches on my car at the service station, where i am supposed to be assured that my car gets in a better condition.
I get a call from your executive asking for the experience on the rate of 1-10.. I gave 1.
She accepted it and said thank you.
I waited for more than a month to see if i get any resolution/response. And as you can see, there hasn't been any.
Let me see what you have to reply. Let me see what hyundai india has to reply and let me also see what the consumer forum has to reply.