Amazon charged my credit card without my permission!

I returned this umbrella because it arrived later than promised and could not use it for my event. I returned it the next day. Amazon never refunded my money. I called on 3 separate occasions and each time a supervisor said they would process the refund but it never came through on my credit card. I disputed the charge and then I got an email saying their I can't dispute a charge on Amazon or they will cancel my account. Then they RECHARGED my credit card without my permission!!!!

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