Naaptol Online Shopping — Refund of amount paid

Address:	Sangli, Maharashtra, 416416
Website:	www.naaptol.com

I had bought a product from naaptol called 'car combo' for Rs.3398 ( including courier charges for receiving the product ), but the quality and usability of product was so low that i had to send them back . for sending them back the product i had to pay more 600 Rs courier charges, complain no:12148398 order no:17623530. so now i am asking them to refund back my cash paid ie. of total 3398+600=3998 Rs but they are not agreeing, instead they have only given me 3398 Rs voucher and said you will get 600 Rs voucher soon ( its been 3 weeks i have not received yet ) . this means i have to buy two products now from them as we can't use two vouchers at a time, this is not done. Please help me to get my refund back or in extreme case get me only one voucher of Rs 3998, so that i can buy only one product .