Expat Properties — no refund nor the property was provided

Address:

Flat No 704, G Building, 38 Park Majestique, Wadachiwadi Road, Undri, Pune, Maharashtra, 411060

My dad purchased property from expat and it's been 3 years since we stopped paying the monthly installments. We were told that a refund will be provided by mr mervin from qatar. Not a single person has got back to me after several years and attempts to reach out to expat managers. I was then given a different land for which i started paying monthly installments as well. On visiting the plot, i decided not to purchase this property as it was completely deserted land out of nowhere. Now mr mervin from qatar has stopped replying to my text and nobody from expat contacted me. I want someone from expat group to contact me and issue the refund that was promised.
Please contact me asap at [protected]@live.com.