Incomplete job, shocking quality

It has been more than 3 months since these people started fixing a damp problem in my home. I haven't been able to use two of my bedrooms because they chipped the walls away and didn't come back to finish the job. Endless excuses, not pitching up when they say they will, a different story every time I ask what's happening. When they do pitch the owner sits in his vehicle and doesn't even check the work being done...and it shows. He has also now blocked me because I called him out on this shocking business practice. DO not use these people...you will pay them but they won't deliver. Terrible Terrible Terrible.