Took my 2012 Chevy Avalanche in for an oil change ...

Took my 2012 Chevy Avalanche in for an oil change tire rotation and Brake issue. Oil change was fine, Only problem I have had was the brake issue. I had taken it in at 18,000 miles for the same issue. Was told I had hot spots and they machined the rotors. Spent the entire day at the dealership. Dropped it off again for the same issue at 45,000 miles. Feels like something is grabbing my brakes all the time. Found nothing but more hot spots. Rotors should not need to be replaced/machined for a second time at 45k. I do not drive in the snow which is what I was told that the road conditions are causing it. I also do not pull trailers with my truck. Just a lot of excuses when I know there is a different issue going on. Very aggravating to say the least. I previously owned a 2004 Avalanche which needed new rotors at 90K. Explain that one!! Are the parts being used a lesser quality for more money??