The Angel of Deaf
NotAllThere Game over man, GAME OVER!
One nugget of advice. If the invoice is £1000, and the admin fee and interest gets to, say, £100, and then you receive payment of £1000, the interest and admin fee gets paid off first, so they still owe you £100 of the original invoice. Which means you can continue to charge interest, or take them to court over it etc.
--drunk on power--
If a 'religion' is defined to be a system of ideas that contains unprovable statements, then Gödel taught us that mathematics is not only a religion, it is the only religion that can prove itself to be one. --John Barrow