<human>: So I booked a flight for my wife and kids to Cancun on frontier airlines four months ago on faredepot.com - a cheap ticket link I found while browsing Momondo.  Well today was the day and the email reservation sent by faredepot.com listed the departure time as 6:55.  However, in the 4 months, frontier moved their flight time up to 6:10.  I was never informed of this change through any method.  So my family and I show up too late to make the check-in.  Once again, we were never informed about any time change.  Calling frontier, they informed us that it was the duty of faredepot.com to email and let us know of the time change.  Calling faredepot.com, they informed us that Frontier had never informed them of any time change?  Is that even possible?  Anyway, what are my options here?  I've been sitting at the airport all day!  Please help /travel!

Can you condense the text into a few key points?
<bot>: Booked a ticket through a 3rd party, airline changed the flight time to earlier, I was never informed, missed the flight, and now I don't know what to do.