I have used Isnare in the past as well. They are efficient when they distribute, but can also be a painful experience sometimes.
I must say, they seem very sloppy nowadays. A few months back they even had a notice (that you see once you are logged in) which states that they have been having some problems. Maybe it is because they got overwhelmed with a lot of users from the IM world. Maybe they just were not able to keep up with the change in the volume of article distribution orders by employing more hands...
I know they have a support website (ticket system) over at
Isnare.com Support - powered by PerlDesk Help Desk Software . I don't know if it is the same one you used or not. They are also on twitter at twitter.com/isnare and on Facebook as well.
Send a public post on the sites above if they don't reply privately and see what happens. Maybe at least you will have your money back.
All the best.
Muhammad