Yeah I got quite annoyed initially. Wasted my time and brain to figure out what went wrong. But I'd like to think this as part of growing pains. The csos that I corresponded to are helpful enough although I don't really expect instant reply. For urgent matters calling is still better. If I remember correctly, things were as bad with cable when more people started to subscribe cable broadband.
Only this time there are more parties involved. Opennet for the tp, nc for ont and isp for broadband provider. If someone screw up down the line there are so many red tapes to cut