We have had nothing but problems with this company!  We have told them that we will call when we need a fill up - they come anyway and leave a very high bill at the door!  Then want payment right then and there!  That has happened several times - they are also very rude on the phone!  Their prices are higher than anywhere else but we can't change because it's their tank!  We are moving and I will be glad to be rid of them!
                        
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