Amazon India — Company does not have address & contact number of sellers

I had a few pre-sales queries and contacted Amazon customer care thru their chat platform. The product page mentioned some 3 months warranty. So I wanted to know from Amazon the sellers contact number & address just in case I need to invoke warranty.
These are small players and have no website. So I thought Amazon customer care must be having that info.
Unfortunately the guy was equally in darkness. He searched the web and gave me an irrelevant address (company name was similar but it was not that same seller)

I am disappointed to find out that Amazon does not have most important details like address and contact number of their sellers that sell products on this platform.
When I expressed my concern, the guy admitted that that's the only info he can see in his system and there are no address or contact number details recorded anywhere. They also see what prospective buyers see online on Amazon website!

This is just unacceptable.