Property Tax Notice of previous owner and Society Not Issuing Share Certificate

Hi, I have bought a property in Jan 2018 in a industrial estate in Mumbai with proper agreement and after obtaining all the NOC from the society with all dues clear, title clear and transfer fees. But unfortunately a property tax of an amount of 75,000/- has been sent by BMC on my property to the society which is due for the period 2010-2018 just two months post my purchase date. Now, society has upheld and not been issuing my share certificate till i dont pay property tax of 2010-2018. The owner is also the committee member of the society who sold his property to me. I have been trying to sort the issue with society and owner but no body is ready to budge. I have questioned that why was i given NOC if earlier dues were not cleared? Even shared that my agreement sales deed clearly states that all previous dues has to be paid by the owner and even NOC states the same. Can anyone please guide me? Is there any way to fight against this? All are in agreement that the previous owner in the society committee should pay but since he is at a good position nobody wants to say anything.