Neteller is trying to collect "outstanding funds" from me

[mike3030]

An email I received today:

"Mike,
Your last transaction with NETELLER for $X was not requested from your bank account due to a processing error. We now accept money orders only to clear up the balance in your NETeller account. The balance remaining is $X. The money order information is as follows: Bank Draft, Certified Check or Money Order made payable to NT Services. Mail To:"

I cashed out of Neteller early in the month and received the funds, so I am not waiting on anything more from them. I am tempted to write back and correct them that it wasnt taken from my bank bc of an error, but rather that it was an illegal transaction therefore they should just count there losses... I figure its a long shot but if I can get out of paying for the same reason they are not paying out those that they owe money too im cool with that. I have nothing to lose by trying to beat them at their own game. Thoughts?