Investors Clinic — Cancellation and refund of booking at EON

I booked a 504 sqft unit at EON at tower E through Ms NIDA Shahid from Inveators Clinic, Noida. They at Investors Clinic were very pushy for the sale. Promising it will be at my terms and conditions. The BBA took almost 1 month to process which have few conditions not complying RERA terms. After bringing those points to Investors Clinis they assured a meeting with the CRM of EON but not results, Later when i informed that i want to cancel the booking and for the refund for booking amount which is 10% of the total cost there is no response either by call, mail or msg from Nida as well as her team leader Mr. Azher. They do not pick up the call. Dont know what to do.
They are a big time cheater.