its tech not a bank card but a prepaid card.if it works like mine they are retarded and the most you can do is wait,usually a few days for it to cancel out.if it truely did fail but process its cause thats how the prepaid cards are setup.so honestly even stardock may not even see any info on their side cause it in fact didnt even get processed.
a gas station near me has confirmed this before.their system didnt show it but it recognized with the card server.
with no final ok from stardocks side it will cancel out in due time.
thats the problem with these not really bank card cards