Brake Master Cylinder problems of the 2017 Toyota Corolla

First occured at 45k, driving home on city street traveling straight at about 40mph when traffic came to stop, went to brake and pedal depressed to floor and car did not stop. Was able to engine brake and using parking brake to safetly stop. Towed to nearest shop, and master cylinder had premature failure and replaced $500. Notified Toyota headquarters USA, no resolution. On 3/12/20, driving home and traffic came to sudden stop on 80mph interstate traveling straight, hit the brakes and nothing, pedal went to floor. Drove car into median ditch with engine and parking brake engaged to avoid accident. Luckily no damage to car or people, property damage occured. Towed to nearest shop, diagnosed again with master cylinder failure, car at 52k miles now, barely 8k from last replacement . Notified Toyota headquarters again without resolution.

Tl- the contact owns a 2017 Toyota Corolla. The contact stated that while driving about 3 mph, the vehicle did not stop at a stop. The contact pulled the emergency brake to stop the vehicle. There was no warning. The dealer was not called. The manufacturer was made aware of the failure and advised the contact to take the vehicle to the nearest dealer. The vehicle was taken to the mojave Chrysler, Dodge, Jeep, ram & Toyota of barstow dealer (760-256-3502, located at 631 main st, barstow, CA 92311) where it was diagnosed that the master cylinder needed to be replaced. The technician ordered the parts. The vehicle was not repaired. The failure mileage was approximately 45,000. The VIN was not provided. Fe.