Well, I'm sure Cheapy's involvement had something to do with it, but still, vindication is good.
Got two snailmail letters from the BBB today regarding my complaint.
One said "We contacted EB, and they didn't answer. This complaint will be marked 'closed-unanswered', and we will reopen it if need be' or something like that.
The other one?
A letter, from Ross Kovarik, Customer Service Supervisor, who rephrased the issue "The customer was given 10 rebate when it was supposed to be 20.' and states 'we have sent the customer the add'l 10.' Which they did, finally, after Cheapy got involved. In other words, if it was just me and my little peon voice, as Ross told me repeatedly, "No".
Of course, I've probably been blacklisted now.
Oh yes, and the complaint was "misplaced internally within EBGames." So if they "misplace" BBB complaints, it's no wonder this was such a snafu.
Oh, and you can stack these rebate codes, I used three on my last order.