Alternator/generator/regulator problems of the 2014 Lexus IS250

The battery goes dead for no reason. This has happened 3 times and I took it to the dealer but they tell me that everything is fine and that I must have left something on. Once maybe but not 3 times, every time this happens the car is parked in my driveway. There is no dealer near me so I have to drive 50 miles one way just for them to tell me that the battery is fully charged. Well no kidding, I just drove 50 miles with the battery being charged by the alternator. It doesn't happen all the time but a new car shouldn't have to be jump started in order to get to work. I had the car towed last time and they said that the battery was dead and that they charged it up and everything is fine now. 3 days later the same thing happened and I had to jump start the car. I have seen several post on the web with others having the same issues and feel that Lexus maybe I should have bought a Ford or Chevrolet at least they are close to my house. I guess you live and learn.