Kin,I would give it a go. I had similar problems with BT to Simon. I did a bit better though with just under £1000. After days of getting no where I finally found one of the directors email addresses. Which seemed to get almost instant results.
Must admit that these types of things do get to me, so when a large IT suppliers was mucking me about a few years ago did a quick search on companies house found one of the directors birthday the following week and sent him a book on customer service skills. I felt much better.
