M3M India Pvt Ltd — Refund not yet received from M3M

We have paid amount 50, 000 to M3M for Antalya Hills project, but when we got cost sheet the price was not same as promised by third party company, we canceled this booking and wrote an email to M3M. we have recieved zero response from them and no one is picking up the phone, its been more than 3 months and as per RERA max refund time was 45 days.