Unfinished painting and cleaning up after complex paint job

The job is not complete and they have disappeared we were never advised that the job is complete. I understand they are looking for their final payment but we have not signed off any paper work to say we are satisfied or if there is anything outstanding. There was very little quality control, they have gone and not cleaned up after leaving nor moved back outside fixtures that they said we must leave until they have cleaned up. The painting I in our unit is not complete, half down pipes painted, the wall under gutters not painted….all in all disaster….I would not recommend this company at all. We were at home witnessing the worker 95% of the time, friendly but not interested in getting on with the job or caring too much about quality. Had to point out a few places that they missed and now still plenty still unfinished. They did not complete the job in the specified time frame, started the job then disappeared until we complained and they returned on their own time. So job never done according to quoted time frame. It will take a lot of time and funds to fix their unfinished mess. They are supposed to be a reputable company, But in estimation at all.