yeah, didnt think anything of it at the time. i just noticed it as i was musing through the leaflet that they gave me, it specifically says it has to be unopened at all. they should have the same returns policy as my place of work, we only forbid returns for money in the 12 months of they are un-returnable/unsellable again... even then the amount of checks we have to go through are numerous. and even if they have been opened/whatever, the person gets vouchers anyway...