Amazon India — complete shipping charges not refunded as promised by amazon

Address:	Bangalore, Karnataka, 560048
Website:	www.amazon.in

Order [#][protected]
I was told complete shipping charges would be refunded ie 480 rs, i even sent the receipt
Amazon has just refunded me 120 rs from 480 rs, and not remaining 360 rs as promised.
I had confirmed this from amazon even before shipping the product back and amazon had confirmed complete shipping charges would be refunded.
Amazon cannot cheat customers this way. I need refund of remaining 360 rs as well as committed, you can go through all the calls and mails with amazon customer care, before and after shipping and each time i was told complete shipping charges would be refunded.