I paid on cutoff day before my water was physically turned off. Why was my water turned off after I paid and later turned back on?

All late fees and reconnect fees are added after 5:00 p.m. on the last day to pay which is typically the 25th of every month. Once these are added the disconnect list is generated and distributed to utility staff before we open to the public on the morning of cutoffs. Once the paperwork is distributed, every customer on the list must be disconnected before we begin turning the water back on.