Rediff Shopping — product not delivered nor amount repaid as requested

Product booked under order no11470508 dtd 18.04.2015 is not delivered till date and customercare is only assuring to look into the matter from last 7 days. I have called several times and the customer care official says wait for 24 hours, wait for 48 hours etc but the problem is not solved and the product is not delivered neither the refund process is initiated as requested by me. I have already informed rediff.com that GATI Logistics has already reported the consignment to be lost and still there is delay in refunding the amount.The customercare still delays without genuine reason and has not updated the staus of my complaint by mail/sms as assured by them.The shopping site is trying to play fraud with the money.