They have to come with another method then. I'm interested in a book that got published this year, and my local library has it, but it's "missing or not returne

They have to come with another method then. I'm interested in a book that got published this year, and my local library has it, but it's "missing or not returned". How come? I had to register my address, my phone, my email and my national ID to get the library card. They know exactly who has the book, they could reach him by phone and have a talk "please, return the book ASAP without late fee or we are sending someone to your house to collect it and fine you". I'm all in for encourage reading. Not so much for encouraging stealing of public property.