Confident Group — Confident greenwich cancellation related

Address:

calicut

I had booked flat no 303 of confident Greenwich ( only booking amount 100000/- given, no sale agreement signed)
I had to cancel it due to some personal reasons.
I received back only 85000 from booking amount as cheque on 7/05/2021 .

I was not informed about this cutting of 15k at the time of booking, I was under the assumption that booking amount is totally refundable ( while discussion with other builders during discussion of some project they had told its totally refundable.)