Cambay Holidays — not refunding my money even after cancelling the membership

I and my family were invited by cambay holidays and neesa group in a hotel for a presentation, on 27th sep 2019 vadodara, for which they offered a 3 day free holiday pakage and dinner.
After a discussion of 90 minutes about their properties and offers, they offered me a nh10 package of 10 yrs membership that cost around 1 lakh, with 2 free international flight tickets and 7 nights 8 days every year free stay in india and abroad, with 15000 inr charge for abroad stay as taxes.along with many other offers...
They wanted me to pay the amount at the same moment which i did not agree.
The executive mr.divyesh, called his boss, mr harshil many times for confirming the offers he was giving me.
Later he made me pay 15000 rs and remaining amount will be paid as emi with 0%interest.
I fell in the fraudsters talk..and paid 15000 by my credit card...
Later, when i researched and discussed with friends and family, i came to know that i should not trust such people, so immediately i called mr divyesh for the cancellation.
He tried to convince me a lot, but i wanted to discontinue. after a lot of discussion, he agreed.
I got a mail of cancellation and asking me to send me the bank account where the money had to be refunded, i did the same...
Its 2 months for now, ...till date i am waiting for their reply and even after calling the customer care, i have not received any mail nor my money back.
Customer care lady says, she has forwarded my complain, if they dont reply, what can she do...
Mr divyesh is still making false promises that my money will be refunded...
Mr harshil is not at all picking up my phone...
They are fraudsters...and dont want to refund my hard earned money..
I want my money back..