Money taken out of my account when I had already cancelled before the end of the free trial

FAO Billing & MyAccount 
My question is why after I sent an e mail on the 18th June to cancel the AVG before the free trial had come to an end was it ignored.
I see that today that payment has been taken from my bank account via Paypal, I also informed you on AVG MyAccount that I was unsubscribing on the same date and it still took a payment, could somebody  please explain why this happened and refund me asap.
Thank you.

Hi Julie,

On checking your account, we could see that you have been charged 49.99GBP for the renewal of AVG Internet Security (Multi-Device) on 2019.6.25

We haven't received any email from your end.

We can assure you that we have not processed any unauthorized payments from your card or account.

We sent an email notification 10 days prior to the order being placed to let you know in advance that this payment was due. This also contained information on how to cancel your Subscription.

Can we proceed with the refund?