Disappoint after sale service

I am a new fibre customer.I app**** for a new line on the 20th of March, got approved on the 23rd. I have been calling from the 27th March to find out when my line would be connected. On the 31st March I was told my fibre line would be up and running after midnight on 1 April. I highlighted numerous times that it was important to have connectivity on the 1st as I have all day online classes that I need to attend this weekend. I was assured that all will be sorted by this morning. Unfortunately No connection has been made so far. Meaning my classes have been impacted. What upsets me the most is I have been calling the customer service since the morning. Not a single time was my call answered. I emailed and just got a reference number. No one is updating me on when I will have my line connected. No one picks up their phone. I’m honestly disappointed by the after sale service and starting to think I made a mistake by moving over to Vox. Can somebody please attend to my query.