Product failure after 2 days and still trying to get my money back!

Absolutely shocking service and product! Installed on December 14th 2018 and stopped working 2 days later. was given the run around continuously for two weeks while JHB went through a heatwave . Was given the runaround for almost two weeks before someone came out to assess the fault (28 Dec 2018 - the technical manager. he advised the unit was faulty, and probably dropped in the warehouse or during the installation which he advised had also been done very poorly as the ducting also did not meet the vents etc. He advised that he would come on new years eve with the part to repair as he could not get it over the weekend. After further runarounds and my calls being avoided, I was contacted on the 8th of Jan to repair the installation. by now i had had enough and am demanding my R38,000 rand deposit paid back to me (as is my right in terms of the CPA due their product failing) as well as my house to be restored to the original condition - roof and ceilings restored and insulation put back properly. they have been using delay tactics for this as well, so i will be following the legal route as well as reporting the matter to the consumer ombudsman. shockingly poor customer service.