Since it was purchased from Best Buy, and it is only 3 months old, you need to contact Best Buy. The device should have a one year manufactures warranty that covers defects. It hasn't been subjected to neglect or abuse, they should replace it under warranty.
A manufacturing defect is something that's wrong with the device itself (e.g., internal, electrical or functional problems). It doesn't include physical damage caused by outside forces.
Your options for replacing a device with a manufacturing defect are based on how long it's been since you purchased the device. Visit My Verizon to verify how long you have had your device or to view when you are eligible to upgrade.
You might want to update this as well and state all conditions.
By the way, what difference does it make if i purchased it from Best Buy? The box has Verizon Wireless Logo all over it..... This is what makes AT&T superior over you. Whether it was purchased from Best Buy or other Vendors, they will replace the damaged phone.... NO QUESTIONS ASKED!!!
Something tells me you went to a 3rd party retailer. When you were with AT&T you had a corporate store nearby so you didn't know. All carriers have 3rd party resellers with the carrier branding.