Idk if this is an American thing but fukk all that. Most people don't pick up numbers they don't know. And who even checks voicemail. Just WhatsApp the bytch on some "hey we met last night, how are you".... She replies... Then take it from there.Never text first.. The first contact should be a call to set something up. Keep that shyt short and sweet.
If she doesn't answer, LEAVE A VOICEMAIL.
if she doesn't respond to any of that just leave it alone.