Clovia.com — Clovia kept my money no refund since a month

I have ordered 4 panties from clovia after delivering there was a default option for return and exchange i have placed exchange request for 2 panties from which only panty is delivered due to some technical glitch 0 quantity was selected for one out of the two panties since then i have been following up with them that either they should return my amount in original payment mode or should deliver the exchange they are just making me fool since a month no resolution os provided my order id is 16338595 now they are saying i have returned only single article liars
Please help me get my money from them