Poor Service

I would like to formally express my disappointment with the service I have received from Cartrack. I initially contacted your team on the 21st of March to arrange an installation for my vehicle, including the video camera system. Since then, I have had to continuously follow up myself, and I have repeatedly been told that the team would come out to assist. Today, I was assured that the installation would take place. I adjusted my schedule and waited the entire day, only to call again at around 16:45 and be informed that there is no stock available. This is extremely frustrating and inconvenient. I find it unacceptable that I was not informed earlier, especially after being given confirmation that the installation would happen today. I would appreciate a clear explanation as to how this situation occurred, as well as a firm and reliable date for when the installation will actually take place.