Checking Credit Card for payment

Hello David. 
Thank you for contacting AVG Community Support.
We have a specialized billing team, who'll give better clarity regarding this concern.
Please use the below link to contact them :
https://support.avg.com/support_sales?l=en
Thank you.

I keep getting the run-around when trying to update my Credit Card details and now after finally checking Q & A the change card details is not working, why?

Hello David. 
Thank you for contacting AVG Community Support.
We have a specialized billing team, who'll give better clarity regarding this concern.
Please use the below link to contact them :
https://support.avg.com/support_sales?l=en
Thank you.