You can choose to stop your campaign at any time, for any reason. Your ad message will not be served in any new episodes after this.
Some episodes that have already been downloaded to listeners’ devices may contain your ad, so delivery may continue for up to 72 hours after you stop it. The same principle applies to campaigns that are completed.
To stop a campaign, head to your Overview Dashboard and click the "..." under Actions for that campaign. This will surface the Stop campaign option.
Once you click "Stop campaign" a pop-up will surface asking you for the reason why you are stopping the campaign. After you fill in the information, clicking "Stop Campaign" will officially stop it.