Has anyone had any problems with the earpiece being distorted? I believe it has happened twice to me so far. It happened earlier today when my mom called me and I could hardly make out what she was saying. It worked fine when she called back, but it was very annoying and I would hate to get a more important call and have to tell them to call back. Also, since the first thing I thought to do was get my phone swapped out for a new one: since I got mine from Best Buy, do I have to go there to get a new one?