Puravankara Projects — My calls are being cut and refund of eoi not being given to me

My eoi (expression of interest) of 2lakhs for my application of 2 sites in purvankara's Purva Tivoli hills is not being given to me . My RM, Mr Chamarthi Sricharan Gupta is not only ignoring my calls but also cutting my calls when he had actually promised to refund my 2lakhs within 15 to 20 days. t has been more than 40 days now and no one responds