What if my brother doesn't return my messages or answer my calls?

If your brother doesn't return your messages and answer your phone calls, then you will always send messages and call him. After a long time, he will naturally reply to your message and answer your phone. Maybe your brother helped you, and he didn't want you to return anything to him, so he might not answer your phone on purpose, or he was too busy to answer it, or he didn't see or hear the phone, or he didn't see the text message. It is also possible.