DEWA says the increase is due to a few added days to the billing monthly cycle for Sept.
http://gulfnews.com/news/gulf/uae/housi ... s-1.525065
To me, that still should not cause the billing amounts to go up by 100% in some cases!!
Here is more on the story as published by the National yesterday (which probably prompted DEWA to respond)!
http://www.thenational.ae/apps/pbcs.dll ... /FRONTPAGE