Nice to meet you
This is a bit creepy unless the girl on the other side of the phone is cute or they are already in a relationship. But the fact that she said ‘nice to meet you’ would imply that they have never met before and this was her way of breaking the ice. She could have been a bit more normal with her approach.
We would recommend to everyone reading this that the best way you can make a good impression on someone is just by being normal at first. Let your weird and crazy side come out later when you feel comfortable with them. But for starters, a simple ‘hello’ will do just fine.