The complaint may have been the trigger, but it's not what they warned you about.
Regardless, we all know you had zero intention of spending $10,000 on this project. Just come off it. Your claims about bait and switch and betrayalton are a bunch of unfounded nonsense, too.
And yes, they could ban your account. You could create a new one, but I believe you'd have to use the same name at least during the payment phase. Kickstarter is probably more interested in money than keeping people banned, so I doubt they'd do anything, but I'm sure they could keep you off the site if they wanted to.