Over a month after claim and my car is still not sorted.

I was happy with the way MiWay handled my claim, everything was very quick up to the point when my claim was authorized. They told me that my car would be sort in about 3 weeks (worst case scenario). Its been just over month now and and everytime I go to the company that they authorised to fix my car there's something missing, or a wrong part that was taken back. It has been over a month of me making my own means to commute daily, pay uber to take my kids to and from school. It has been taxing me financially and today I wrote and email to the person that handled my claim and I got no response even though I saw on my app they received my email and read it several times. This is not on because use this car for my business as well as my family. I'm really not a happy client right now, THIS IS A COMPANY THAT THEY CHOSE TO FIX MY CAR.