water meter removed and never replaced

During December 2016 my water meter was removed because the meter was faulty. Since December my water meter was never replaced. I am billed monthly on estimated usage. Several attempts made to contact them, the tel nos to the call center and offices ring continuously. How is Ekurhuleni billing me considering that I was away during December and January. I have not been contacted by them since December 2016,we are now in April 2016.