How to remove virus Through AVG from my website?

Hello Karen,
Thank you for reaching AVG Support Community.
May I know, how do you confirm that your website is affected by attackers?
If possible, please help us with possible screenshots, so it will be easier to understand your concern better.
If needed, please find a quick guide on how to take a screenshot here.
Do you have AVG protection installed on your computer?
For better clarification, please reach our concerned AVG Business support using the below link, they will certainly look into your issue and help you accordingly.
https://support.avg.com/business?l=en
Thank you.

Can you help me to remove viruses from my Website which is effected recently as attackers were able to compromise an unknown number of workstations and then used those computers as authoritative DNS servers for the target domains. As a result, visitors trying to visit affected domains were redirected to a server hosting a message claiming that the root zone of the Internet had been defaced and replaced with XSS code.

Any help will be appreciated:
Thanks

Hello Karen,
Thank you for reaching AVG Support Community.
May I know, how do you confirm that your website is affected by attackers?
If possible, please help us with possible screenshots, so it will be easier to understand your concern better.
If needed, please find a quick guide on how to take a screenshot here.
Do you have AVG protection installed on your computer?
For better clarification, please reach our concerned AVG Business support using the below link, they will certainly look into your issue and help you accordingly.
https://support.avg.com/business?l=en
Thank you.