Cheating done by Holiday package provider

HI, I have taken a time share package like club Mahindra from Nirmiti holidays for an amount of 82000/- . I did not like the product and gave them a request for refund within 3 days. It was written on a contract that you can let them know in 30 days in case you need to cancel. However, they took a lot of time and did not refund my amount and finally gave me assurance that they will provide a very good services. Now after 2 months, when i tried booking first time the accommodation, they said it is full, we will try to book some thing else etc. Clearly, it was a MIS selling case. earlier it was told to me that i need to intimate 2 days in advance and there will never be over booking problem,here i am intimating them in 40 days in advance. Now, i need the amount to be refunded, which is not an easy task. What actions should i take from filing a case in consumer court perspective. i live in Bangalore and the jurisdiction in Mumbai.