Update credit card details

I spent 45 minutes last night trying to explain to some online chat individual in Outer Mongolia that I want to update my expired credit card details in advance of my AVG renewal on 1st November 2020. In the end I gave up. 

‘if anybody knows how to do kindly advise. 

Hello Stephen,

Please accept our apologies for the inconvenience caused. This isn't the experience we wanted you to have with AVG.
We've forwarded your credit card updation request to our concerned team. They'll get back to you via email as soon as possible.
Please make a note of case number #11633998 for future reference. We request you to keep checking your inbox/spam folders for their email response.
Your patience is much appreciated.

Hello Stephen,

Please accept our apologies for the inconvenience caused. This isn't the experience we wanted you to have with AVG.
We've forwarded your credit card updation request to our concerned team. They'll get back to you via email as soon as possible.
Please make a note of case number #11633998 for future reference. We request you to keep checking your inbox/spam folders for their email response.
Your patience is much appreciated.