The New Explora Installation - No show up from the installer

Good morning The consultant that I spoke with last week on the 8th of June 2021, told me that someone from Multichoice will come today (18th of June 2021) to install the new Explora Decoder (24 months price lockdown contract) and test connection with either my current satellite dish or the new satellite dish he will be bringing with. Our appointment was scheduled for 08:00 and I had to cancel my appointments to accommodate the installer.It's now approaching 08:30 and no one has shown up yet nor called me. This is such an inconvenience and extremely frustrating. Care to explain such an inconvenience and the consequences thereof because someone must be held liable. Regards, Karabo