Rather than going back to same parts over and over, I would suspect different parts; calipers specifically.
Did you (or the mechanic) lube to caliper pins properly?
Are you sure the brake pads spread when you release the pedal? The pads might stick to the rotor for whatever reason it maybe. (Spread pins not doing its job, caliper pins not being lubed etc etc)
Both power stop and Raybestos, in my personal experience, aren't so garbage so that they would wear out within 3 months. I know they aren't top of the list like Akebono or Brembo, but they aren't garbages.
I really think there are other issues with your brake system; start with calipers.
Did you (or the mechanic) lube to caliper pins properly?
Are you sure the brake pads spread when you release the pedal? The pads might stick to the rotor for whatever reason it maybe. (Spread pins not doing its job, caliper pins not being lubed etc etc)
Both power stop and Raybestos, in my personal experience, aren't so garbage so that they would wear out within 3 months. I know they aren't top of the list like Akebono or Brembo, but they aren't garbages.
I really think there are other issues with your brake system; start with calipers.