On returning from holiday I received an invoice, but there was no delivery note, and my house/tank is very difficult to find. I rang and queried this. I was promised that proof of delivery (pictures taken by the driver et al), and there would be a query put on my account. This situation has now been going on for 6 weeks. Every Monday I recontact them by phone or email. Every time they say they will contact me back. Meanwhile I have now received the final demand notice. I did receive a message on my phone 6 days ago to which I replied and left a message but again nothing from the company.