Paytm — I placed order in March 5th. Not received product/cash

Address:

Hyderabad, Andhra Pradesh

I placed an order for 2 puma t-shirts on Mar 5, 2015 order no.[protected]. Until now I have not received the product. When I contact customer care they take 4-5 days to respond and say they will resolve the issue in 3-4 days and the same thing happened 5-10 times until now and still waiting for the refund. The customer care of Paytm is of no use to the customer when needed. Please suggest me on how to proceed legally to get my money back.. Thank you and Regards, Mouli.