We received our Artesian Water bill today and it is considerably higher than normal due to past month's usage?  It says we used 6,000 gallons of water versus the normal monthly 2000.  Having trouble believing this and didn't get much help when I called customer service?  We have no leaks that we are aware of, have not watered the lawn or washed cars, haven't had any house guests who could have increased bathroom/shower usage.  Any thoughts?