This just in from spamcop support....

"I'll tell you what the issue is.  If it was just run of the mill
advertising spam we might throw a little less weight at it so it backs
off earlier.  But, this is completely different and as you suggest,
Intuit seems completely oblivious to it.

Scammers have figured out a way to send invoices out saying you've been
charged for tech support, Geek Squad, anti-virus, etc. The invoices
include a phone number to call which happens to be the same tech support
scam centers calling us everyday trying to defraud us out of money.

These seem to be more realistic because you actually have something in
front of you with official logos and other information. We view these as
high risk of success, so hit them hard.

Here's a sample of a 'Paypal' one.  Click 'view entire message'. Note
the phone number shows up on many fraud watch sites. We're seeing tens
of thousands of these every day."

QuickBS, are you out there?