OK, so first Masashi left a message on Hinami's phone. Then Hinami called Masashi back, and this time Masashi was there to pick up the call? The first one is OK as it is one way call, but the second one could have been a bit more interactive (Masashi could respond with 'yeah, I did (call), can you please let me know how I can prepare?' or something like that. Otherwise, I think both of your English is good, and meaning got across! Good job.