Don't want my AVG TuneUp renewed

I never got a E-Mail bevor, only now:Your AVG TuneUp subscription has been automatically renewed, and you have been charged the amount below…
but thanks for helping me.
Priyanga Sekar.

Hello Helene,
We're sorry that you decided to cancel your AVG TuneUp Unlimited subscription.
A charge of ZAR 349.00 was debited for this subscription as auto-renewal service was enabled for its initial purchase. We do not process any unauthorized charges without intimating our customers. We sent a pre-billing notification prior 30 days of subscription's expiry.
We initiated a refund for this renewal and sent you an e-mail informing the same.
Feel free to contact us if you need any help.

you renewed my AVG TuneUp I dont want it again and never said you can use my credit card and 
drew R349,00 from it.please cancel and get my Money back.
otherwise I change all my AVG supscripton.
I'm really annoyed
Helene Lipper

I never got a E-Mail bevor, only now:Your AVG TuneUp subscription has been automatically renewed, and you have been charged the amount below…
but thanks for helping me.
Priyanga Sekar.

Hello Helene,
We're sorry that you decided to cancel your AVG TuneUp Unlimited subscription.
A charge of ZAR 349.00 was debited for this subscription as auto-renewal service was enabled for its initial purchase. We do not process any unauthorized charges without intimating our customers. We sent a pre-billing notification prior 30 days of subscription's expiry.
We initiated a refund for this renewal and sent you an e-mail informing the same.
Feel free to contact us if you need any help.