you're not alone, dear :)
I am too getting bills for 3-4 months with no reading but fixed charge (Imagine, I've been on vacation means there shouldn't be NO/less water consumption in that period).

response to complain : water meter not working, is that my (consumer's) problem??
But I pay.........!
IMO It's peaceful to pay than breaking my head with stress dealing with socalled "customer driven" service!!
:)