If a construction company completely messed up every job in my home they have done, what can I legally do?

I have had a nightmare remodel done and have had almost everything redone. Including defective carpet. I hired a construction company (referred to me by my insurance).
The last 2 jobs that need to get redone are a paint job and a bathroom flooring job. I do not want them to come and redo these 2 jobs. I asked for a credit instead.
Of course they proposed way less than what they charged. For example, they offered me about half $$$ credit on the paint job.
This has been going on for 15 months. The paint job was taped poorly, paint wasnt covered properly. Their are spots that werent even covered. It basically looks like teen-agers did it AND they used flat paint that I cant even wipe clean.
The linoleum wasnt properly laid and itwasnt rolled. There are bumps everywhere and a cut 6 inches long. I found out that when they installed it, the normal person who usually did this was on vacation. Amatuers laid floor.
What can and would you do to resolve this credit
which should be a total refund?