If the phone wont take a charge it either the battery or the phone port. My advise is for you to go back to the store as they will have that phone in the back. Take your charges with you.

1. Have them plug in there charger to elimitate the chargers.

2. Have them take your battery and charge it up a bit for you in one of there phones enough so that you can go home and backup your phone using the Blackberry manager.  If you need to get a copy of this you can get it at www.vzam.net/blackberry just click on desktop software and follow the steps.

3. After you have backuped your phone (granted this is if your port is acutally working) Format your phone and then restore.

Results

1. Charger is bad

2. Port is bad

3. Software was currupt (more likely)

4. Phone is bad over all and you will need replacment.

Replacement options

1. Underwarranty no charge call customer care at 1-800-922-0204 they will send you to tech for a replacment. The store will also call for you to do this must be ordered.

2. Out of warranty same as step one but out of warranty replacement would cost you 50 dollars.

3. You have insurance, you will need customer care for this one as this opens another can of worms.