https://www.mormon.org/free-book-of-mormon

What they are saying (I think) is the toll free number is only good for people that want to request it in the USA.

The Book of Mormon: Another Testament of Jesus Christ is a record of God's dealings with the inhabitants of ancient America (Learn more about the Book of Mormon).
Just fill out the form below and we will deliver a free copy of the Book of Mormon (limit of one book per household). It’s a gift from The Church of Jesus Christ of Latter-day Saints. Or you can also read or listen to the Book of Mormon online.
Please enter your personal information below to receive your free copy.
Or, you may call this toll free number 877-537-0003 (U.S. only).