Sub-standard work.... sub-standard service

I unfortunately did not read the hundreds of bad reviews before allowing my insurance company to accept the quote from Renew It. I had a simple paint job on the front of my bumper that needed a touch up. After doing their job of following up constantly, I was told that my car was ready for collection at 9 on 25 March. 2.5 hrs later, I received the keys to my car only to be told that I need to bring my car back as the paint job was not done properly. On inspection, white paint has been found on the black parts of the bumper, a portion where the scratch is, has been missed and chips are found on the edges where work was done. I have escalated the sub- standard service to my broker and insurance company. I'm actually considering taking further action.