I emailed the company and explained what had happened. They were very understanding and immeasurably helpful, sending out replacement vinyl rolls (cut to my required sizes too!)
I offered to send back the damaged roll but Mike said I should just keep it and try to salvage anything I could from it. Customer service like that is rare these days!
So, if anyone's after some vinyl (hypalex) from a trustworthy source they're on ebay under the user name "quality-ware"
It's not a substitute for real CF but it does a good job of covering up oxidising aluminium when you "cba" to polish it (again)