Glen — Automatic 4 burner gas chulha installation

My installation job request no is SB/2022/9/MH/472208.
Since 12 pm today tour person is telling he is coming to visit and will reach around 2.30 pm. But till now he has not arrived. My whole day is wasted as i couldn't complete my pending outside works as your person didnt came and i had to wait for him.
All times he told that he will arrive in 15 mins and i called him 4 times since then but he didnt came. This is really poor and pathetic response from Glen.