Trying to request refund

Hello Duncan, 
Thank you for contacting AVG Community Support.
I am sorry to hear that you are unable to reach our support and want to get a refund for AVG subscription.
I understand how frustrating it feels to be in this situation, and I'm sincerely sorry for it. I'll certainly check and help you out. 
As it isn't advised to discuss personal/account related info here, we've sent you an email to your registered email address. Please check your inbox/spam folders to find the email and use it to get back to us.
Thank you and keep us updated.

I am trying to request for a refund of £49.99 as I don't want to continue with the service (anti-track) and I was billed on my credit card over a month before the previous paid subscription was up.  The system is doing all it can to prevent me getting a refund.  When I get to the final stages of the request process a window opens for me to have to -

'Get help right now from a real human by starting an online chat.'    There is no way past this apart from clicking the 'Start Chat' button which is unresponsive.  The Customer support number that I finally got doesn't work either.  Don't even get a dialling tone.  

Can anyone please suggest what else I can do?  The whole process is deeply frustrating and I've now been trying to sort this for over 90 minutes.

Hello Duncan, 
Thank you for contacting AVG Community Support.
I am sorry to hear that you are unable to reach our support and want to get a refund for AVG subscription.
I understand how frustrating it feels to be in this situation, and I'm sincerely sorry for it. I'll certainly check and help you out. 
As it isn't advised to discuss personal/account related info here, we've sent you an email to your registered email address. Please check your inbox/spam folders to find the email and use it to get back to us.
Thank you and keep us updated.