NHTSA Complaint #11453735 — 2012 TOYOTA PRIUS

I brought the car to the Toyota dealer already 3 times for the same problem,now happened again,they told me the first time,nothing wrong with the car,and I paid them,the second time nothing wrong they said,the third time they said it’s the 12 v battery has to be replace it,I did replace it,but still the same problem I have,the HYBRID SYSTEM problems ,the Toyota company should fix it ,because it’s something very unsafe it’s happening with my car,please help me to resolve this problem….. the car drive but stop anytime,I almost have a very bad accident with my daughter ON board