Amazon India — Not picking up defective items supplied

I have purchased a sreen guard for mobile phone. The item bought through Amazon was broken. So I requested return of the product. While I waited for 2 days for pickup but nothing happened. I called Amazon customer service twice and both times they have assured that the item will be picked up next day blaming the same on their courier team. Nothing happenned. I feel this is a ploy by Amazon to cheat customers. SO DO NO CHOOSE AMAZON FOR YOUR ONLINE SHOPPING.