Installation of Dish Poorly Done

RPL Intergrated Systems was the company assigned to do the installation of the upgrade of my DSTV. Alvin the installer arrived on Saturday 27th Feb to do the installation he advised me that I need to change the dish as well because the one I have is not suitable for the decoder. I purchased the new dish. On 29th February when I arrived home from work I see that the decoder is not working an error message stating that there is no signal this could be due to bad weather, faulty connection or installation. I called Leon Dass to report this and he advised me that his guys would come out the next morning which is the 1st March but the next morning Leon advised me that I first need to contact the call centre to report the fault and when I asked why he said they need to keep record of it. I called the call centre and they strangely enough could not pick up my job card yet the installation was booked via the same call centre of Blingstallation. I get home now and the bracket has now come out the wall so when Alvin changed the dish he did not change the bracket. What messy third grade workmanship is this. How can they change the one and not the other.