2012 Nissan Sentra Braking problem

Hello everyone. I need some advise from anyone that may have a clue on what's
happening to my car. I recently replaced the Brake Pads and they resurfaced the
rotors at the shop. The problem was that they had a bad calibrated machine at the
shop and they made my good rotors bad. So the brakes started to feel bumpy. I took it
to another shop and they had a hard time to resurface them propertly. I had to go to
another 2 shops in order to find one with a propertly calibrated machine and now the
brakes feel smooth. HOWEVER. I drove to the Mexican Forest where there's a lot of
sharp curves and the front driver wheel started to do something really wrong. When I
brake while turning to the left, the wheel locks and brake making the car suddenly turn
to the left. It does that for about 1 sec and the it releases it. I have to hold the steering
wheel very hard so I don't loose control of the car. The problem only happens when I
brake while turning to the left. There's no problem while turning right, nor there is any
problem if I don't brake when turning left. If anyone here have any idea whats the
probelm, it would be really appreciated, Thank you!!