Catalytic Convertor problems of the 2007 Toyota Corolla

The contact owns a 2007 Toyota Corolla. The contact stated that the vehicle would hesitate to accelerate at all speeds. The failure progressed until the vehicle stopped accelerating completely. The vehicle was taken to an authorized dealer and the contact was informed that the catalytic converter needed to be replaced. The vehicle was repaired. The failure recurred approximately one year later. The vehicle was taken back to the authorized dealer and the contact was again informed that the catalytic converter needed to be replaced. The vehicle was repaired. The failure continued. The manufacturer was not made aware of the failure. The failure mileage was 43,000.