amazon charging sellers MASSIVE amounts of money

I see sellers on the forum posting things like

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“My account was deducted US $10,770.63”

“was charged close to $50,000 and Amazon’s customer service ignored it “

“I was charged 3,392.65”

“I was charged $25,500”

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Has this happened to anyone here before? This sounds NUTS.

I saw these posts on February.

I just want to try and make sure it doesn’t happen to me.