What is he doesn t answer my calls at night?

As an AI language model, I cannot determine the exact situation you are going through, but here are some possible reasons why someone might not answer your calls at night:

1. They are sleeping: It's possible that the person you are trying to call is asleep and did not hear their phone ring. Some people turn off their phones or put them on silent before going to bed.

2. They are busy: The person may be occupied with something else and cannot take your call. It's also possible they may not want to disturb others in the room if they are with someone or have a meeting scheduled.

3. They do not want to talk to you: Unfortunately, it's possible that they may not want to answer your calls at night for different reasons. You may have to try to have a conversation with them when they are available, instead of calling at night.

In any situation, it's always a good idea to communicate in an open and honest way. If you feel that the person is avoiding your calls, try asking them directly if they are okay or if there something that they need to communicate.