How do I look up my case number

I was on the phone for about an hour on Saturday the 27th trying to get a refund and subscription cancellation on the driver updater service and I was given a case number and was told that I would within 24-48 hours get an email about it as well as get my refund and I have uet to get either. I would like to look up my case but I don't know where to do that. I have my case number written down and I know the number I just don't know where I search.

Hello Zachary,
Thank you for contacting AVG Community Support.
We are really sorry to know that you are not getting refund. We apologies for the inconvenience caused. We'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 with further details.Please check your inbox/spam folders to find the email and use it to get back to us.

Thank you and keep us updated.

Hello Zachary,
Thank you for contacting AVG Community Support.
We are really sorry to know that you are not getting refund. We apologies for the inconvenience caused. We'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 with further details.Please check your inbox/spam folders to find the email and use it to get back to us.

Thank you and keep us updated.