I AM VERY Frustrated!! I actually want to change my insurer and make sure they don't work with renew-it

I am very angry and dissatisfied with the service from this company. It is the worst place you can ever get your car fixed. It's been 4 months since my car has been with them and every time I call for feedback I never get a response from them regarding when I will get my car back. I was later promised that my car would be back by the 1st week of November but I never got it back. I continued contacting them for feedback and I was told I would receive my car back on the 8th of December then that dragged to the 12th and today when I called I was told my car would be released next year in January. I mean what in the world is taking them so long to get it fixed. Uber is expensive and I really can not offord to travel by Uber everyday to and from work and everywhere else. I've never been this inconvenienced and frustrated like this in my life. Whenever you call renew-it, you get stood up and then your call gets hung up on you then I have to keep calling to get through to someone only to be that the person who's dealing with your car is still "busy with another client" they'll call you back and most of the time you never get a call back. I regret that my insurance is partned with them. I haven't had a car for the past four months and nobody knows til when, I can't even go anywhere since transport is so costly for me.