I had a very worst customer support experience with Amazon in regards to delivery am in a remote place and Amazon is ready to deliver the product but this guy in courier office will never delivered that to my door step he asks me to travel few miles to get my parcel I registered a complaint against him still no response.
About returns and refund you have to be careful while purchasing always choose Amazon fulfilled product instead of seller fulfilled products because sellers fulfilled products are Hart to return if they are not good also we need to travel to sellers place In our location to return that back. I have a VR box waiting to be returned for past 10 days that was hectic.
Worst customer support amazon