Hi,
Translator service (Cognitive services) does not have the option that you can stop the service. However, if the intention is to stop access to the service you can build your own automation. With Azure Monitor metric alert rules and action groups you can get alerted when certain threshold is reached on specific metric and then execute automation like Azure Automation Runbook, Logic App, Azure Function or third-party service via webhook. Whatever you choose you will have to write your automation workflow. As the Translator service cannot be stopped you could for example disable public network access to it. That can be done in Portal via Networking -> Allow access from: Disabled. On API level this corresponds to setting property publicNetworkAccess to Disabled. Of course when you do that it means that you are not having private endpoints to the service as when Disabled private endpoints can reach the service.
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