When you hear the message "your call has been forwarded to voicemail," it means the person you are calling is currently unable to answer the call. Your call is automatically redirected to their voicemail system where you can leave a voice message. This typically happens if the recipient is busy, on another call, has their phone turned off, is in a no-network area, or has enabled a "Do Not Disturb" mode or call forwarding settings that send calls directly to voicemail. It does not necessarily mean you are being ignored or blocked; it is often a way to ensure calls are not missed when immediate answering is impossible.