Section 88A(3) in Nagpur Improvement Trust Act, 1936
(3)If the sum for which any bill has been presented, as aforesaid is not paid into the Trust office, or to a person authorized by the Trust in that behalf to receive such payments, within fifteen days the presentation thereof or if no appeal against any claim included in a bill is made, the Trust shall cause to be served upon the person liable for the payment of the said sum a notice of demand in the prescribed form.]