Which document is it?
I looked at all the links under "small print" and nothing was found about being ineligible for a new account within 30 days.
There is the 30 day requirement for the now expired promotion, ending 29 Feb 2016:
http://www.bankwest.com.au/library/pdf/PDS_20120824-143838.pdf
Maybe that was it... oops. We received our letters today also, two accounts, two cards each... 5 sept close date, been playing the game for 2 months only
