It's so frustrating...I can well understand.
I wouldn't risk the NPB. I HAD to do daily 700+ NPB a day for months and months...if I didn't, eBay had me paying fees on ALL of the bids. Plus then I had to wait the 7-10 days to file final credit.
Keep me apprised of the goings on if more pop up...and I'll hope this is the end of this for you.
It's really jarring on one's nerves...unless you've gone thru something similar you can't imagine how it affects your outlook on owning an ecommerce site.