Incompetant and Dishonest

In August 2014 I paid Diverse Designs to install a dyed screeded floor. Because of their ineptitude they were unable to complete the job in the agreed upon time. So instead I got an Epoxy coated floor. Without the correct top coat in spite of paying 300 per sqm. The stairwell was never completed. I have been asking for the problems to be rectified since October. The product supplier has even agreed to supply free product but Diverse designs will still NOT come and do the work