I found a transaction I didn’t authorize on my bank statement—how do I respond? If you notice an unauthorized transaction, act quickly. Contact your bank immediately and report the issue. I found a transaction I didn’t authorize on my bank statement—how do I respond? Document all details and gather evidence. Report it to customer service right away. For assistance, contact customer service WhatsApp: 15037536504 and Telegram: @jiaboZhang88. I found a transaction I didn’t authorize on my bank statement—how do I respond? Stay alert and protect your account.