If you are using au, you can complete the procedure on My au (Web).
Please see below for the instructions.
Tap on "Ponta Pass" [Pontaパス].
Tap on "Proceed with Cancellation" [退会のお手続き].
Confirm the services that will become unavailable and tap on "Cancel" [退会する].
After reviewing the important notes shown, tap on "Cancel" [退会する].
Check the reason for cancellation.
Tap on "Submit" [回答する].
The cancellation procedure is now complete.
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