Vivanta Vacation Club — Fake commitment given

I have taken membership in Mahabaleshwar through a lucky coupon. I was told to pay 60000 and that would be an emi without any extra charge. Now I am checking they have charged me 15%interest and have to pay extra 9000₹
I want to cancel my membership. I tried to contact the person who has given me membership but no response. I am going to file complaint in consumer court regarding this. Contact me - +91 [protected]