E-Flite Customer Service Issues

I recently bought an Eflite rudder/elevator set for my Elite Apprentice S and encountered some issues. The first set's graphics came apart on the first flight, and the most recent set broke during flight after being properly assembled. This incident caused damage to my plane, including the nose cover, rudder, vertical stabilizer, front end, frame, and wings. I have photos taken at the time and I'd be willing to share them. I have multiple Eflite planes and give lessons as well, so ensuring the quality of the parts is crucial.

I am looking for a speed controller for my E-flite BL 15 brushless OutRunner motor [redacted] KV, model ELFM4015C. I initially thought the motor was simple, but it appears to be specialized for radio control. The speed controller I used caused a transistor to overheat and release smoke; I did not connect the yellow wire and am unsure of its purpose. I seek an OutRunner motor that can be directly controlled for variable speed, connecting to a 6 amp hour lithium-ion 18-volt battery, capable of spinning at least 4,[redacted] RPM. If you can recommend such a motor with a speed controller, I would appreciate it. Please contact me at the provided number with information.