Quite, the debits were not NSF, but were declined by the bank as they are US$, it doesn't matter that you are not a citizen. Neteller knew of this problem ages ago, and should have informed you of this so that you could register a non US$ bank account. By implementing usual policy of not informing customers of changes in advance, they brought the rejected debits on themselves.
They are entitled to the $200, but no more.
They would only be entitled to the NSF fee if your bank account really WAS NSF at the time. For what is simply a "technical problem", there is no breach of contract, it is a so called "event beyond our/your control". Neteller have many "technical problems", but don't compensate customers with $30 a time (would be great if they did, I would have $100,000 by now
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