When I was looking for a conservatory, the sales rep from Anglian was very professional indeed. There were no silly games or high pressure sales tactics. We agreed the spec and he gave me the price with no pressure to agree 'there and then'. We saw may other sales reps from other companies who were much less professional, but in the end we decided the Anglian product was the best. Some of the local companies quoted cheaper, but these were for inferior products. Where they were subsequently able to increase the specs on their products to match Anglian's product, they ended up being more expensive.
Anyway, we decided to go with Anglian and it was all down-hill from then onwards. The entire project was an absolute fiasco from start to finish; you just would not believe the incompetence of the sub-contractors who built the conservatory and the total lack of management on the part of Anglian. You also would not believe the lies we were told by a finance rep from Anglian who tried to pressurise us into taking out their finance agreement even though we had told them we wanted to pay cash - that finance rep was the one and only person I have ever escorted off my property with strict instructions never to return.
This fiasco went on for over a year, but luckily I kept an accurate log from day 1 (with photos) which I built into an internet website on a server I had access to at the time. Eventually when the conservatory was completed to my satisfaction I refused to pay the final £10k due to breach of contract on the part of Anglian. I also then provided Anglian head-office with links to my detailed website log which made very interesting reading indeed. Eventually we reached agreement on final terms and I ended up getting £6k knocked off the agreed price of £20k, so I ended up with a very high spec conservatory £14k. Reading this you may think we were lucky to get £6k knocked off, but believe me it did not compensate for all the stress and Anglian only agreed because I had them by the short and curlies with my website log (luck or generosity on the part of Anglian did not come into the equation one bit).