Non payment of promised amount by Real Estate Consultants

In late 2019,I had booked a ready to move flat in Gurgaon through a well known and big real estate consultancy firm.At the time of booking,I was promised by their employee who was associated in finalising the deal that out of the brokerage they will receive from the Developers,an amount of Rs 75000 will be passed to me.The time frame indicated for payment of Rs 75000 to me was after I have made atleast 30% payment against the flat since their brokerage will be released only after that.Inspite of the fact that I have made 100% payment and taken possession of the flat,the promised amount has not been paid to me till date even after repeated mails/ messages to the concerned person and they seem to be avoiding the same on one pretext or the other. I have an email in confirmation of the aforesaid statement sent from official email address of the Company with name,designation and employee number of the person associated with the deal. Do I have any remedy? Kindly help with your valuable advise.