But then when the reporter comes back a few days later with a different receipt that _is_ valid and FedEx tries to give the canned response about not revealing

But then when the reporter comes back a few days later with a different receipt that _is_ valid and FedEx tries to give the canned response about not revealing customer transaction data... they inadvertently have. Because if it wasn’t customer transaction data then they would have simply said as much, as they did the last time. Companies always respond with “no comment” for a good reason: to prevent people from drawing incorrect conclusions by reading between the lines as you are doing now.