Calling and imessage
When i call this particular person it goes straight to voice mail and when i text them it doesn't send and send as a text message that they doesn't even see. It's like that for one person and i can see when they text and call me. I can't even facetime them at all because they don't see it but i can see when they call me. How can i fix this and why is this happening?
iPhone 8, iOS 13