Follow up: Support decrease unpaid user tickets

As a direct follow up to #4030 (closed), we want to follow up on whether Support can further lower the number of unpaid user tickets that require human time to decrease spend on unpaid user tickets as this has come up in recent Key Reviews, and R&D Variance meetings. This is a companion issue to the product report follow up: #4813 (closed)

Now that we have the improved problem types, some of these may be feasible that weren't before.

Things to do

We should confirm these auto-responses, triggers, or automations are in place. If not, if possible, create them.

1. Account blocked - possible improvement: add to internal comment
   • See #4814 (comment 1227901120)
2. IP block
   • See https://gitlab.com/gitlab-com/support/support-ops/zendesk-global/triggers/-/merge_requests/251
3. Delete account
   • See https://gitlab.com/gitlab-com/support/support-ops/zendesk-global/triggers/-/blob/master/triggers/active/FRT%20and%20NRT%20Stage/Autoreply%20to%20account%20deletion%20tickets.yaml
4. credit card validation/validate/verify
   • Not a dedicated category, so nothing further. See #4814 (comment 1220061177)
5. not receiving notification emails
   • See https://gitlab.com/gitlab-com/support/support-ops/zendesk-global/triggers/-/blob/master/triggers/active/FRT%20and%20NRT%20Stage/Auto-work%20no%20notification%20email%20tickets.yaml
6. not receiving password reset
   • https://gitlab.com/gitlab-com/support/support-ops/zendesk-global/triggers/-/blob/master/triggers/active/FRT%20and%20NRT%20Stage/Auto-work%20forgot%20password%20tickets.yaml

If anyone has further ideas, please comment or add to the list.

cc @tcooney @akramer @cmestel