Bad workmanship and bad service to resolve their mess! Mr car is falling apart!!!

My insurance 1st for woman took my car to Renew-it to get it fixed in September 2017, it took 5 weeks to fix the car. On the day i went to pick it up it had to go back to the workshop because of the mistakes i picked up as soon as i saw it which i don't understand how come they didn't see the mirror wasn't clipped in properly: As i was driving on my way home i realized my wheel alignment was not right which i went the next day to fix again i don't know how it made it through quality assurance! In two days i started hearing funny sounds and i reported it, a week later my bumper became lose i reported it. An assessor was sent out to check the bad work and he sent a report in November and till today nothing has been fixed. My car was booked in last week Monday and on the same day it was returned because they had to order the parts. Yesterday i followed up and was put through to someone else and he confirmed nothing was ordered for my car and he said he will call back with feedback and he never did! Today i called again to follow up and the manager of the two guys i have been dealing with was not available to speak to me and i was told she will call back but util now she hasn't! MY CAR IF FALLING APART AND GETTING MORE DAMAGED IN THE PROCESS OF ALL THIS ****!