Three questions

1) I accidentally bought the same book twice. Once as a book and once as an audiobook at the same time. I only wanted the audiobook I would like a refund on the regular book.

2) I have no idea how to access the audiobook I cannot listen to it on my phone which is how I like to listen to books. I am wondering if I need to refund both books and just purchase the audiobook somewhere else?

3) Apple does not recognize my laptop despite trying to resolve this problem for the last two days how do I get it to recognize my laptop because it is highly annoying to constantly verify it.