Grand Tourio — unethical practice of duping people with fake promise

My name is d. R. Singh
I was called at the thane office in oct 2018. I was told to pay 25 thousand on the day and after discussing with family members if liked the package i may pay the rest. However due to some issues i wanted to back of the deal which was as agreed upfront.
I requested them for the refund, however to my surprise they sent me a membership card and asked to pay the remaining amount. When i persisted them with the terms, they asked me for 45 days and sent me a mail.

However, after that mail they have literally stopped responding to my mail or taking any calls. Its been nearly 2 years i am chasing them.