Less than two hours ago, I received a Samsung Gravity 2. I've been messing around and figuring out the different things you can do with the phone, and came across a PIN lock. Thinking I'd be able to password-secure my phone, I typed in the wrong code 3 times and my phone locked up. It says, "PUK lock. PIN blocked. Call customer care". Before I call customer care, is there anything I can do at this point to unlock it?