2003 Chrysler Town And Country brakes problems

Front brakes on 2003 chrysler town and country, with only 67k miles, lock up for no reason disabling the vehicle. This has happened twice in the last 2.5 years. Both times, it had to be towed to the dealer where the dealer found the front driver side brake had over heated and locked up. The last time, the brakes became so hot that smoke was coming from the driver side brake as the pad was on fire. Each time dealer has replaced front rotors, brake pads, calipers, and a partial brake line with system flushed.

I purchased my vechicle in july of 2003. In august of 2003 with about 20,000 miles on it my front brakes had to be replaced. I thought brakes should last much longet than that. The dealership replaced the brakes for me and I chose less expensive ones(180.00) not cheap. He told me they would squeak. Ok so they squeaked for months and this past week my rear brakes went bad. I questioned that I have not even had this 1.5 years and have had to replace both front and rear brakes(300.00).