I signed up in december last year and got an e-mail beginning of march, which ended in my spam by the way!
So be sure to check there sometimes, when I did there was an e-mail. Mind exploded.
Calling in general scares me but calling Nintendo was something else. Very nerve wrecking but at the same time I really wanted to get started! It's the 'not knowing what you can expect or what to answer' that scares me a bit, but that call was pretty basic, easy and short Don't worry, it's worth it.