Apple Music signed me up without my approval. Now I'm being charged and MY songs are missing.

Hence, why I said "iMusic or some such..." I'm a strictly Mac user over multiple devices from way back, and trust me when I say that iTunes is no longer what it once was. (It started primarily as ones own library/catalogue but then morphed into a record store first and foremost). But the real questions I need to address are: A. How best to attempt to get a refund –AND – B. the most efficient way to restore my music and playlists out of the Apple Music trap, which absorbed my collection. I love Apple all the way, but this has been a disappointment, and I'm not alone in this happening.