On June 17th I was told my 8m TX licence was ready and would be emailed to me if I paid £50. Of course I was interested (I would have preferred to pay nothing and just be issued with a NoV to my amateur licence), but I could not be sent the licence until the invoice was settled. The date of the licence (when it eventually came) was from June 1st - well in the past!! I have asked for the dates to be changed to when I can actually do some research.
Perhaps engage brain next time or send me a copy of the licence marked "not valid until invoice paid" or similar? No, that would involve thinking.
It would appear they are only interested in taking money!