I BEEN canceled my subscription for Amazon prime and it charged $16.04 on my card please refund me

Ordered something on the 19th and canceled it the same day and still have yet to receive updates on my refund

Dear Sir / madam,
My name is Arlene Garcia Tyson. from Trinidad and Tobago WI.
Last year from March 2nd 2020 i discovered that money was being extracted from my bank account for Amzn.com/billsWA and  Amazon Prime Videos to which i don't have an account nor did i make an application.I emailed a complaint to Amazon to discontinue the purchase; this was done to no avail, monies continued to be removed from my bank account.I also made mention to discontinue Amazon Prime to which there was no action again being given. i made attempts to watch a movie, i was  told that i did not have a prime video account but money continue to come from my bank account,i have since relinquished that  previous Amazon account in the hopes that it would be discontinued, it has not and my bank account is being exhausted by the extraction of money for something i have made no application for, that being Prime Video account and a monthly Prime bill payment to which again i did not subscribe to in 2019 or 2020.As mentioned earlier I have closed my previous Amazon account to which I'm still receiving and paying a bill . I've since opened a new Amazon account  which at present remains dormant because of this predicament I'm being faced with presently.
I kindly seek Amazons' immediate attention to discontinue the removal of monies from my bank account to a service I haven't applied for,nor do I have access to but yet receive a bill for.