After payment of booking amount @ 10% of the consideration amount, builder sent me a draft copy of the agreement. The terms & conditions of the agreement are biased towards the builder & I denied to sign the same unless corrected to the extent of being neutral. The bulilder is demanding the instalments without ececuting the agreement & threatens me to cancell my booking & dismiss the booking amount. In the eyes of law can a builder demand for further installments without executing any agreement & in case of non payment of installments as per his demand, can he dismiss the booking amount ?.