Stripe's customer service is pretty much nill, borderline negligence. One possible explanation could be a bad actor using your site as a testing ground for stolen cards. If enough has happened, then Stripe will just cut you off from everything. Do you have safeguards on your site to validate those cards? But at this point, since Stripe has completely screwed you, I'm not sure what anyone here can say other than to ge…
Happened to me when launching a new site. Quickly refunded all payments, but still had to pay the fees.