Mobikwik — money stuck with mobikwik

Mobikwik has recently launched it wallet service through which we pay for our online shopping. Ebay as provided the option to make payment using mobikwik. I tried to purchase a product from ebay by paying through mobikwik but when I reached the mobikwik gateway it asked me to add money to my wallet. After doing so when I tried to make payment it said transaction cannot be completed and my money is now stuck with mobikwik. I have asked mobikwik to refund my money but its been more than 15 days and there is not reply from them. Kindly help me in getting my money back.