Amazon.in — Sarees returned on 13 Jan, no refund till date

Address:	533105
Website:	www.amazon.in

I ordered 10 sarees online from amazon.in. Received all. But due to some reason I returned two sarees, which were collected on 13/01/2016 assuring refund in 2 working days. Today 20/1/2016.
When I tried to lodge claim with Amazon.in, the experience is just worse and blood boiling .
I filled carefully all but failed to imagine the date format, although I tried all usual formats in the world. The message boils my blood.
"There was a problem submitting your request
Provide a valid return shipment date in the format specified".
No format was specified although I tried all date formats used by Amazon.in in their bills and letters.
When they ship costly packages so easily, why they should bother customers with nasty things and boil blood?