Lemans Chevrolet City

I came in for a tire balance, tires and wheels are brand new, aftermarket and came mounted and balanced, but they started shaking the steering wheel at 70 mph. After waiting 2 hours for a balance, they shake worse than before I came to you, now they start shaking the steering wheel and gas pedal at 50 mph, and Much worse at 70 mph. Several weights were added to all 4 wheels, and he made them shake worse. Also as soon as I got home, checked the lug nuts (torque spec is 140 ftlbs 2015 Sierra), my torque wrench only goes to 200, and that stil would not break them loose. I had to use my Impact just to break them loose, one by one, then torque them to spec. I called and talked to Alvania Stork, she said, (oh no thats not possible, our Senior Tech was the guy who did your balance and he torques everything to spec), and continued to argue with me that I was wrong, even though I had the proof/torque wrench in my hand. So 2 hours of my time and $100 dollars for my wheels to shake worse then before. How can your Senior tech call them good and send them out the door, worse than they came in???? This is Absolutely ridiculous.