Can not uninstall AVG free version

Hello Linda,
We understand how something like this can really try your patience.
We appreciate your valuable effort in trying to fix it. I have sent you an email with further instructions to be followed to get our additional support. Please check for the email on spam or junk folders if it is not present in the inbox.
Please feel free to contact us for any further assistance. Thank you.

I have tried to uninstall AVG at least a dozen times. I have tried to use the AVG removal tool several times and I've tried Revo uninstaller, neither has worked. AVG keeps asking for my license number and a notice has been coming up for a couple of months now stating that my protection will expire in 21 days. I have tried to call tech support but I either get put on hold, disconnected or told I am calling the wrong number.  Can someone tell me how to get this off my computer???

Hello Linda,
We understand how something like this can really try your patience.
We appreciate your valuable effort in trying to fix it. I have sent you an email with further instructions to be followed to get our additional support. Please check for the email on spam or junk folders if it is not present in the inbox.
Please feel free to contact us for any further assistance. Thank you.