Bridgestone Tyres India — Dissatisfied with the product and company policies

Hi i would like to tell that the tyres from Bridgestone are not of any good quality. I have purchased the car last year(Oct 2019) from Sterling Honda showroom Faridabad and the car ran just 7000 Kms.
While running on the Moradabad highway, the pillion tyre got burst at the speed when the car was at a speed of 90Kms/hr.
This happened on 6th of August 2020 and the incident was reported to the car showroom on 7th August.
The rear pillion tyre shows a bulging and the company says that the tyre was hit.
please let me know how can a tyre bulge when there was no hit and the car was just moving.
Without even seeing and checking the proper conditions the company(Sterling Honda and Bridgestone) rejected the claim.

Please let me know whom to reach out and how to get my tyre changed.

Who would taken the responsibility if there would have been something bigger that could have happen.

Regards,
Saurabh