Worst change ever!

I used them to book a business trip across the world, and chose business class. When I had to change the timing of the trip, which I moved to several weeks later, they rebooked my ticket, charged me a large fee and told me I had the same itinerary. But when the ticket arrived, they had moved me from business to economy - on a 9 hour flight -- and kept the same price. So, without notifying me, they committed me to an unchangeable $4,400 non-refundable economy class ticket. I could go economy class on this itinerary on any major airline for less than half that price. They are supposed to be a reputable agency, but they ripped me off, and when I called to ask them to correct their error, they said....too bad for you. You paid the fee and changed the ticket (remember -- I had no opportunity to review it) so you take the ticket or lose all your money. I will never use them again, and no one in my company ever will either. Potential buyers should force these agents to give them an itinerary with clear class designation before purchasing anything from them. Buyer beware!!!!