Buyer booked apparment in 2007 and paid 95% value 2007 and signed Agreement in 2007.Possession of appartment is yet to be given. Possession may be some times in 2013. As per agreement scheduled time for possession was September 2009.. Now builder is demanding payment of service Tax.As per agreement at the time of taking possession blance 5% and registration charges are to be paid. Now if buyer does not pay service tax he does not get poassesion.. What redmedies are availble to buyer now.