When you disconnect an integration, or delete your workspace, Pulseri now removes what it created in the other service and revokes its access. That covers the Stripe webhook endpoint, the Zendesk trigger, webhook and token, and the Slack token. If a service is unreachable at that moment, the disconnect still completes and the audit log shows which steps need a manual check. Microsoft Teams has no automatic clean-up, so remove the app from the Teams admin center.
See Privacy for how your data is handled when you leave.