Can not redeem Amazon Prime / free Echo offer

I am not able to redeem my free offer for a year of amazon prime and echo. I have talked to customer service agents 4 times and spent many hours on hold and no one has been able to help me. When I click on the link to redeem on amazon it says my offer has already been redeemed. Can anyone assist me with this issue?

Re: Can not redeem Amazon Prime / free Echo offer
Moderator Emeritus
Hi primeproblem,

Your issue has been escalated to a Verizon agent. Please check your Private Message Inbox for a message from Verizon_Support. You can find your Inbox by clicking on your username at the top right corner of this page. Please direct all correspondence concerning your issue to the agents, who will be assisting you privately.