PIN number

<p>Since the end of December, my PIN number, username, and password that the admissions office sent me seems to have become invalid.
Is this happening to anyone else?
I sent the admissions office inquiry e-mails in January, but they haven't answered yet. I admit I'm procrastinating making a phone call, but I just wanted to make absolutely sure that this is not normal before calling (I am terrible at phone calls...).</p>