Bill ESTIMATED, meter readings ignored

I sent the city my meter readings and pictures on the 3rd January 2020. On the 7th January, the city decided to estimate my readings even though they had my readings. What is the point of having an email address where people can send their meter readings if there is nobody at the municipality to read the emails? Why ESTIMATE if the correct readings are available. The estimation was done on the 7th January, 3 days after I had sent the municipality the correct readings?? I would understand if they had come to re-read the meters. Why estimate when you have the numbers and meter pictures to confirm the readings? What is the municipality's excuse for not using my readings? Where was the person employed to look at the emails for meter records? On leave or just ignoring the emails This is pathetic service at its best!!