1, too many callers, the line is busy. Just try dialing a few times.
2. The dialing time is not within the working range. Call again when you go to work.
The staff of Education Bureau are very busy, especially when they go out during the enrollment period every year. You can try calling many times.
Check the information to see if the phone number of the local education bureau has been updated, so as to avoid the situation that the phone number is wrong and I can't get through.
5. You can go directly to the Education Bureau for face-to-face communication, regardless of whether the phone has been disconnected.