Most of the problems stem from Blizzard allowing people to use Switch (which is good) but forgetting to add the issue no (which is bad) without the issue no, the banks will not allow money to be withdrawn.
What makes it even more laughable is some of the names appearing on some peoples statements. Croydon Park Hotel & SWALLOW ST GEORGE, all showing sums of £8.99 (damn their cheap hotels ) Seems the company doing the transactions have screwed up
More info here