Amazon. — unauthorized charge on my credit card account

Address:	46902
Website:	Amazon

I have a charge on my credit card bill dated 7/18/2018 for 57.05. All it says is amazon.com amazon.com/bill wa i have no idea what this is about. My credit card has a charge for $57.05 dated 7/18/2018 i don't know what this means as i can't find anything i charged anywhere on my amazon order account. I would like this amount to be deducted from my credit card account as i have canceled that card but still owe the $57.05 as a charge.