Bridgestone Tyres India — warranty denied - tyre has two minute holes on sidewall

Address: Gautam Buddh Nagar, Uttar Pradesh

I purchased 4 tyres (Ep-150 155/80r13) from tyre dynamics on feb 2019.
Within a month i faced issues, upon verification i found that one of the tyre had 2 very small holes on sidewalls. I left my tyre for inspection in showroom and got a report that "we regret our inabilty to offer you any replacement as the failure was not due to any manufacturing fault
And cause of failure is sidewall cut-penetration".
Firstly thing there is no cut and no signs of external object hitting it. I am attaching photos for same.
Secondly the holes are so minute that you cannot locate it with naked eyes until you put water on it.
While selling tyre you guys claim it has 7 layers and when there is a damage you say it happened due to external object eventhough there is no cut mark and warranty is denied.
Please look into the matter urgently. My app refrence no. : e1908018.