Techgen I don't think they CAN refund, But I definitely think they SHOULD, based on the fact that they were selling it primarily as an AT&T phone, (as it has issues with all other networks), they were aware of the impending problem when it was released, and told all their customers not to worry and that they won't have an issue, even when AT&T was calling (alarm bells ringing?...) those customers and warning them that the phone won't be supported...
As for the Sunbeam, for some reason it is the only phone AFAIK that is still working even though its not on the list. They probably just didn't make a fully comprehensive list, and in reality, the Sunbeam is Volte, so it makes sense that it works.
