Terrible communication and service

I app**** for Fibre and was approved. Installation was scheduled for Friday, 10 September 2021 at 11:30. I contacted Vumatel and was assured that if installation was scheduled they will come and install Fibre. I called again after 12 when no one pitched for installation and was told by Home connect agent they will submit a ticket. I called Vumatel and they told me that Home connect must submit a ticket. I waited and No one got back to me. On Monday I called Home connect and got a ticket number and was told someone will contact me, which they did on Tuesday! Another installation was scheduled for Wednesday 15th September 2021. Again NO ONE pitched for installation. We made numerous calls and every time someone is escalating the matter but NO ONE IS contacting us letting us know what is happening! We received the router early today, but when we called a Vumatel Technician, he told us that the installers was at the wrong address!!! How is that possible if the router was sent to the correct address?? Can someone please let us know what is going on or what do we do, as we received an email that we are ready to be billed!!!!!!!!