When Tech Fails

I am a big fan of my cell phone, it is a Blackberry Curve 8320, it can do all sorts of things that just make life a little more fun for me. But today it failed me, because just as I get to work today, across the screen flashes SIM CARD REJECTED. At first this did not concern me, because it had happened before. All I had to do to correct it then was pull out the battery and sim card, put it back in and restart my phone then tada it works again. Not the case this time, I pull stuff out, put it back in and nothing. I tried this a few time through out the day and nothing ever changed just the same SIM CARD REJECTED written across the top. So I called T-Mobile and they said my sim card had died and I needed a new one. The good news is that they will not charge me for a new one.