My gate has never been locked- (25 +years) and no dog either.My meter is accessible. My estimate was way over.My son's gate wasn't locked either in a neighbouring suburb- all of a sudden we both have estimated bills. Why is this happening now? When we haven't had heaters going because of the warmer weather, so of course your estimate will be greater.It seems like a deliberate ploy to make money or to get the public to read the meters for you or both.