Amazon India — defective iphone 6s (22000)

SKU: MN0W2HN/A
Serial No: FYDXW3SMHFLR

Received this iPhone 6S via an Amazon reseller today (2 OCT 2019). The unit is refusing to charged up after 6/8 hours of continuous charging. The charger seems OK (tried with other Apple devices)

Have used many apple products at past but never faced this.

My guess is, few unscrupulous sellers are selling bad/broken/refurbished iPhones via online channels (such as Amazon.in) without much QA.

https://www.amazon.in/Apple-iPhone-6S-Space-Storage/dp/B01LX3A7CC/
Look at 1* reviews for this item - 13% for Apple products. Unbelievable.

Before these unscrupulous FBA sellers damage Apple brand here, please take necessary action.

And for myself, have to find an Apple Service centre for a service denial letter in order this to be replaced by Amazon.