Blackberry unlocking?

I bought a Verizon Blackberry Bold 9650 from amazon. It said it was unlocked and from what I've googled, it is because it does say the network is disabled and all that but when I insert the sim card I bought for it, the sim card says disabled and so does the rest of it and the top of my home screen says activation required and when I hit it, it says welcome to verizon. Did I miss something? The sim is from att and they told me I would be able to use my blackberry no problem with their sim.

it will work on att at reduced speeds. You might need to contact them to help you if its truly unlocked phone.