Dealsnshopping.com — Rs 8520 no refund process

Address:	New Delhi, Delhi, NA
Website:	dealsnshopping.com

Hello
My name is Riyaz Shaikh. I was contacted by some one from Dealsnshopping on February 8, 2016. They assured me a prize of Rs52000 if i pay them Rs8520.00. I paid them Rs8520.00 same day using my credit card. I called back and informed that I am not interested in the prize and want to opt out from the Prize. Hence I asked for a refund. Every time i called these guys they kept on post poning, saying that some one will call me regarding my refund.
One month down the line in first week of March I got a call from Ragghav Shrivastav and he said that he can refund half of the amount for the remaining half I will need to to buy a product. I did no agree with this and later on he told me that he will process a refun in 2 days. I waited for 2 days and I called back Mr Raghav Shrivastav, he told me that he was unable to process a refund and he is going on a leave. He told me that he assures me that on March 20th he will process a refund for the entire amount. I waited and have not yet receive any refund yet.
can some help me to get my money back from these people?