Uauthorized charge to my credit card

On my crediit card, I was charged NOK 349 on October 20, and NOK 399 on November 18 with this reference:

DRI*AVG Technologies, www.avg.com, IRL  
Reservert transaksjon
   399,00
What is the base for these billings?
I do not have any valid subscriptions with AVG Technologies, please therefore refund these amounts immediately.

Best regards, Tore Larsen

Hello Tore,

We are sorry to know this.
We will certainly check and help you with this.
We have sent you an email informing about the AVG product details and please revert to that email for further queries.
Thank you.

Hello Tore,

We are sorry to know this.
We will certainly check and help you with this.
We have sent you an email informing about the AVG product details and please revert to that email for further queries.
Thank you.