Thames water appointed Castle water as the agent to collect the money for the water we use we never chose this company, from day one they want 6 months money in advance of which 7 days after yo receive there bill you are getting demands and RED letters bearing in mind we hadn't even used the water at this time so as soon as i could i changed suppliers who are far cheaper and make no demands the problem i'm still having after 3 and a half months they wont give us back the money sitting in our account of £208.74 and just keep making excuses and saying leave it another 4 weeks my advise would steer well clear thers plenty of other suppliers out there