[ChrisH]

Continental was matching frequent flyer miles from other carriers, but I am not sure if that program is still in effect. It will not hurt to call, and talk to them about it. If they can gain you as a frequent flyer, from Delta, it seems they may be willing to work with you somehow.

Fares do change all of the time, and it has happened before that there may be one ticket left at a specific price, and someone else has gone through the purchasing process to get that ticket, just seconds ahead of you, leaving that fare no longer available for purchase, as you attempt to buy it. HOWEVER, it shouldn't happen like it did to you, numerous times, even with changing dates. It does sound like something fishy is going on there, or they just have a huge issue with their computer program/website, that needs to be fixed. I would report this to Delta, as well as the BBB, and the DOT. If they are practicing this as part of their business, it needs to stop. If it is some kind of error in their system, they need to have it fixed.