As the OP of this post, this is pretty much what happened to us! The plane also took off 10 mins earlier then it was supposed to! We maybe shouldn't have went to the bathroom and they called last boarding call when we were in the bathroom, when we came out, my hubby said they just called last boarding for our flight, why we never heard anything while we were walking around the airport is beyond me.
The people that were in our seats said they had paid for seat assignments when they booked their flights in January, I also paid for those same seats in September when I booked my flight, so how the hell does that happen???? I was frustrated because I had paid for the seats, and we had to seperate. I was angry because my daughter was sitting in a seat in front of me and over a row, and I couldn't do anything to comfort her, it made me sick as a mother to not be able to do anything.
The over-selling issue ticks me off as well. We had friends that flew back the day after us (yesterday) on the exact same flight, I just got off the phone with her, they didn't personally have the problem, but they were over sold by 6 tickets, and were asking people to give up their tickets. They were at the airport for almost 3.5 hours, and the two flights of Airtrans that went out before theirs, they were asking people to give up their seats! It's ridiculous really! I won't vent again, I just wanted to make a few things clear. Next year we will be doing the 24 hour drive instead, I am done flying for awhile!