To turn off the Billing notifications, follow these steps.

1. Navigate to and log into your account.

2. Click the user icon and in the drop-down box, click Settings (Figure 1).

Figure 1: Clicking settings from the drop-down list

3. In Get Notification For section, clear the Billing events checkbox and
      click Save Changes (Figure 2).

Figure 2: Clearing Billing events checkbox

Reach out to the notification settings by clicking here.