Tickets purchased, don't use onetravel.com

I bought the tickets, we're leaving St. Louis on Friday the 15th of January. I won't ever try to use onetravel.com again. Yesterday I booked 4 tickets on Continental, through Copenhagen, to Tallinn. In the middle of the night I got an e-mail stating that because of the short connection times they had to change the flights to Lufthansa, and it would be $700 more. Never mind that they had advertised the flights, now it's too short. On the phone I told them it wasn't too short, if I went to the Continental website I could pull up the identical itinerary as far as Copenhagen. Then they said it was the high season, all sold out. I said "expletive! It's 2 weeks after the holidays, that's not the high season, and I can see available tickets on the Continental website." The biggest issue of all is that I went from an American flagged carrier to a German one, so it was not acceptable. Finally they agreed to cancel the tickets without any cost to me. No confirmation yet, but they have not tried to charge anything to my credit card, and I called the credit card company and told them I'd be disputing any charges from onetravel, so I think I am safe. I'll post the actual ticketing process in later.