Make a call. There is a complaint phone number printed below the label on the barrels of water. You can call the phone number to make a complaint. The complaints to the water delivery station merchants are about the service attitude and the quality of the barreled water, including the barrels being sticky, impurities in the water in the barrels, and the barrels leaking. For these reasons, you can call the complaint hotline. Water companies have customer service departments that are responsible for these complaints and will quickly instruct the water delivery merchants to properly resolve them.