Pathetic service from Vumatel

On the 12.07.2022 I got a call from Vumatel to inform me that they are ready to install my fiber line, I specifically asked them to come on Wednesday 13.07.2022 because I had someone at my place to allow them to get in. They got there @ 11:30 and left 15min later saying they would be back after 12 (according to my domestic). At 13:30 they still haven't returned and I decided to contact Vumatel. Now I can handle them not being able to get back as they could've hit a snag but what grinds me is the fact that they dont call me to let me know what is happening or if they will even be back. I then call Vumatel that is a whole other **** pot on its own. I called 12 times and was on hold over 2 hours and nobody answers the phone. My question is this... what the flying **** are Vumatel employees doing that they cant answer the phones. when I eventually got through to one of the pathetic idiots working there he hangs the phone u on me when I request to speak to a manager. That's another questions, what's the point of Vumatel having managers if they are never ****ing available. I swear, I will post this mail on every social media site I can find to spread the word of Vumatel's incompetency.