You cannot open another account once you close your account. Before closing your account, consider:
Changing your privacy settings
Unsubscribing from Sling Money emails (tap the 'Unsubscribe' button at the bottom of any Sling Money email)
Uninstalling the app (you can reinstall and log back in at any time)
To close your Sling Money account:
Withdraw any money from your Sling Balance
Tap your profile picture in the top-left of the home screen
Scroll down and tap 'More'
Tap 'Close account' and follow the instructions