morehawes - 10:10 am on Oct 5, 2010 (gmt 0)
So I have to ask... Am I the one being unreasonable?
Not unreasonable to want some answers from them no, and if they have got any sense then they would try to retain you as a customer and keep you happy. Ignoring you is obviously not going to do this.
Of course as piatkow stated there are alot of factors here we don't know but unfortunately though I think the fundamental error here was on your part in not checking the price of the order. To be honest I don't really think the supplier was really in the wrong at the time of ordering. Price changes will always occur (admittedly this is a big change) but you can't expect the person you spoke to to be familiar with your account and purchase history. I would never place an order without confirming the price first. Never, not matter how small.
That said nothing excuses poor customer service and if I was you I would try my luck to get something back. If you don't get anywhere you may have to accept the loss and vote with your feet.
After writing the above and thinking about it, did their website reflect the price change? If not then i'm sure you have every right to demand the old price as advertised - if they do then they are pretty well covered.