bad service

my car CLIO 4, BLAZE 900T LTD 2016 has been giving me issues since the day it reached 15 000 km. i took it for service few days after that hoping the service will fix the issue but the day after the service it did the same thing, shows fault messages and it lacks power to move. had to be towed 3 times I've taken it to the dealer 5 times and they are not seeing any fault. Yesterday service and maintenance accompanied me so to see what the car does and he saw. But today they are saying i must continue driving this car meaning every other 2nd day i will go through the same predicament, not to mention the car is only 11 months old.