Lodha Group — cheating senior citizen when booking flat

Address:	Mumbai City, Maharashtra, 400068
Website:	Lodha Developer

I'm a senior citizen
At the time of booking the flat at casa marvella, i was told that just reserve the flat so that unit won't go to someone else and if we change our mind we can cancel the booking after deducting 10% of booking amount.

So with the convincing of the sales team i have booked it immediately.
But now due to some personal problems i want to cancel the booking.
I was never told about no refund and all my hard earned money would be forfeited
I would never book that flat
And would have thought before booking.
Now when i asked for cancellation of the said flat i was told it is not possible for 10% but 50% after deducting certain charges
This is ultra cheating
After sending multiple emails now they are sending me cancellation request letter which is declaration cum indemnity which i have to sign and courier to lodha.
This is cheating people.