We've already had a chance to take a look at another app (Dial Zero) that offers the ability to get someone directly on the line when you call a toll free number. Everywhere that Dial Zero fails, Direct Line dominates. The idea is basically the same at it's core, but Direct Line bypasses the entire user driven information source and has provided their own. This means that you won't have to worry whether this method will actually work and what you'll need to enter in to get to a live person, Direct Line does it all for you.
When you load up the app, you're looking at a straight list of company names. You never really see more than just that when using Direct Line, but pressing on any company will immediately exit the app and launch a phone call. The phone number it calls may just have an extra digit at the end of it or sometimes nothing at all, but most of the time you'll be looking at a good deal of comma's and numbers trailing the companies standard number.
Those symbols allow for the phone to delay in sending over the additional numbers, keeping the entire process automated for you. You will however, have to enter in account information in certain places (AT&T requires it to get anyone on the phone), but Direct Line makes sure to drop you off at that point, leaving nothing else but a live person your next step.
It's not hard to justify keeping an app like Direct Line on your iPhone. Even though it costs $0.99, think of all the time you'll save with using this instead of wasting your time with Dial Zero or just sitting on hold. It's definitely a back page app, but unless you're under 18 with no need to call any large company for any reason, this is a must have app.