I went over $2k yesterday in less than a week. NOt banned yet.
If the rule is $2K, then the way it works is that the next trade will notify you of the ban. You could be banned and just not know about it. The threshold does not prevent somebody from getting banned. All it does is get you banned and therefore allow you to trade in over at the $2K mark. Two very different things to distinguish.
Not saying to you specifically but if you want to figure out specifically what's going on you guys have to post exactly what went on in your situation. Just saying "I got a notice" is useless frankly. That's like saying "I got a speeding ticket" and not providing enough information as to exactly how fast you were going to get flagged. The bans are being tracked on a PRO level and if you are in an area that requires a DL, then the ban is tracked on an ID level (which can span more than one PRO card). A distinct condition that is also possible would be unloading over $1K in a day too.