Originally Posted by
bandana1948
This was my assumption, and one I would think most consumers would make. Having indicated that a lap child would be flying in addition to 2 adults, and having been given a quote based on that information, am I really expected to do United's homework for them and double check their math? My responsibility is to not misrepresent the number of passengers flying and in what capacity. I expect United to give me a quote based on that information, but I do not expect to have to double check their math. I expect to have to pay what they quoted for the passengers indicated, which I did.
I, along with the vast majority of non-airline apologists and contract law, agree with you. Once you've paid them you've made a contract (as MatthewLAX's post shows).
In terms of what can you do, if UA won't fix it before traveling, I think you'll have to pay. Once you pay, you can dispute it with your credit card company (you have a valid contract that UA did not follow and overcharged you). Alternatively, you could go to small claims court to recover the additional payment.
Best of luck, and please keep us updated on United's response!