Terrible service and they don’t honour their own appointments

I bought a TV at Major on Saturday and requested for the it to be wall mounted, I paid for the installs service, and was told the installers would come immediately after the delivery. I received a call from Blingstallation shortly after and I requested hem to call em on Monday since I was driving. On Monday (10 November), I noticed their missed call and called back, they arranged to have my TV mounted the next day on 11 November at 15:30, they also sent a confirmation. On 11 November I stayed home the whole day waiting for them, by 15:17, I received a call from them informing me that the installers were running behind and that they should arrive by 16:10-16:30. By 16:33, the installers still hadn’t arrived, I decided to call Blingstallation to find out where the installers were, and I was told that they were running behind, they told me that they will confirm when they would arrive. As I’m typing, at 16:50, they have not sent any confirmation and the installers are not here. This is a terrible service, people should get their own private installers for less, with less hassles.