Hi Ray,
I'm sorry to hear about the nightmare you've been having and am amazed at your patience. As you seem to be hitting your head against a brick wall perhaps you should consider BBc's Watchdog (
http://www.bbc.co.uk/watchdog/gotastory/) or bringing it to the attention of newspapers and TV (local and National).
It's sometimes worked for me to actually go this far with the promise of negative/ bad publicity for a company to actually finally do something about it.