Can't install AVG antivirus for Mac

Hello John.
We regret the inconvenience caused.
It looks like there are still remnants of Norton on your Mac.
I'd request you to contact them back for help to remove it completely.

I completely uninstalled Norton (with help on the phone from Norton support), but still get message AVG can't be installed because it detects Norton still on my system. Has anyone else encountered this?  Any help out there? Thanks.

That's all you've got for me? My last call to Norton, getting passed through 3 levels of unhelpful "support," resulted in an almost complete mental meltdown!

Hi  John,

We are sorry to hear this.

We will help you to resolve the issue.

We have a separate team for the Mobile products.

Please follow the below steps to contact our Mobile team:

Please click on this link: https://support.avg.com/support_contact_form?l=&retUrl=support_sales .
Select the option as "YES" and the operating system as "ANDROID"
Fill in the details and click on the option "answer via email"
Once your request is submitted you will be getting the prompt answer via email from our mobile team

Thank you.

Hello John.
We regret the inconvenience caused.
It looks like there are still remnants of Norton on your Mac.
I'd request you to contact them back for help to remove it completely.