Hi @vickic, we'd really need more info. If there's a charge on your most recent invoice that you wish to dispute, you're best to reach out to live chat → www.optus.com.au/livechat/pmobi. If the dispute is in relation to a premium SMS charge. You might find this thread helpful → https://yescrowd.optus.com.au/t5/Online-Mobile-Self-Service/Premium-SMS-PSMS-and-How-To-Set-A-Spend-...
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