The Alice way:
Alice: Can you email the test data to me
Vendor: We don't work that way.
Alice: How can you let me have the 2Mb file?
Vendor: Our company's antivirus policy not to permit the electronic transfer of files. I can however print out a hex dump of the data for you to type into your system...
Alice clutches a USB drive and the still beating heart of the vendor
It looks plausible that punch cards might be in use....
That question doesn't avoid the potential response of, "We are unable to answer that query"; which funnily enough could be used to answer any question.... of course I think the real reason is the test data is faked and as such they are unable to supply the fake data that shows their laziness!