>1 chargeback we received last month

>We refunded all of them

Was it a chargeback or a refund? It can't be both.

I'd assume one chargeback isn't enough to get your account banned though. There may be other factors, like one of your company officers sharing a name with a person the USA doesn't like.

I agree with the sentiment that you should have multiple payment processors set up in parallel so you don't lose any business due to this issue happening. Until you become big enough that they can't afford to do without your business, you'll be at risk of arbitrary suspension.