Got my prepaid VISA card but can't find where I can use it...

Hi-Unlike some of the people posting here I did get my promotional VISA card (2 phones transferred from Verizon-$100 each). My issue is that I can't find where I can redeem it for purchases. I admit I haven't tried everywhere but I have tried at a grocery store and Amazon, neither would accept it. Any tips out there of where I can spend this? Thank you!