Amazon India — refund delayed

Address:

Mumbai City, Maharashtra

The refund of my cancelled order is not yet credited to my bank account. It has been more than 15 days now. Every time I call customer service they tell to wait for a 3-4 days but it's of no use. They are saying the product has not reached their warehouse. Well that's not my look out. Contact the delivery guy and ask him about where he has lost the package. I want my refund as soon as possible.