I booked a flat in Bangalore . After sometime I came to know that sales person from builder has hidden some information . I cancelled the booking after knowing that. Agreement was not signed till then . While booking it was mentioned that before siging of agreement if I cancell the booking then booking amount will be refunded after deducting 25000/. But now builder is not returning my booking amount. Niether he is responding to my mails. What course of action I should take?