I've just been charged for a subscription I cancelled in February. Please help

Hello Julie.
Thank you for contacting AVG support community.
I apologize for the trouble caused.
As it isn't advised to discuss personal/account related info here, we've sent you an email with further details. Please check your inbox/spam folders to find the email and use it to get back to us.
We will certainly help you out.
Thank you and keep us updated.

I cancelled in February. I have a notice that I have successfully unsubscribed, but now my credit card has been charged! Please take this charge off. Thank you.

Hello Julie.
Thank you for contacting AVG support community.
I apologize for the trouble caused.
As it isn't advised to discuss personal/account related info here, we've sent you an email with further details. Please check your inbox/spam folders to find the email and use it to get back to us.
We will certainly help you out.
Thank you and keep us updated.