cancelled flights

United was so kind as to cancel 2 flights on my 16 year old daughter travelling alone. Luckily I was with her for the first cancellation and quickly got her on another flight 3 hours later. On her way home, her grandparents had to drive her 45 minutes to another airport for her to get the last seat on a flight departing. ELDERLY PEOPLE!!! Of course the airline basically says "TOO BAD!" This was recent. It gets better, in September of 2011 we booked 6 tickets to Italy for a June of 2012 trip. At the beginning of June we had heard nothing about the tickets so I proceeded to check with the airline. Only to find out that they had no reservation for the six of us but clearly charged my credit card!! The airline, after 5 hours, YES 5 hours ont he phone, found 6 seats for us all over the airplane. We were than informed that our reservation for the way home was good and we had seats. Of course when we left Italy, we had no seats and stood at the counter for 1 hour, again being placed on the plane all over. I DO NOT RECOMMEND EVER FLYING UNITED. I KNOW I NEVER WILL!! Hope this helps.