So, it's interview season for consulting firms and college seniors, and I'm taking my licks. It turns out that there's going to be enough travel involved with all these shenanigans that the miles will actually add up, so I'm looking to maximize my United time. Last week I put in a request through one company's travel site for flights on United, which were actually cheaper than their "preferred carriers"; still, this morning I got an email from their travel service confirming me back DL -- in full Y, and at absurd expense to them. Is there any point in pressing the issue (and if so, how should I go about it?), or is it not worth the risk of ticking someone off?

Gracias!