Komercni banka Fraud: How to Report It and Stop the Money
If money left your Komercni banka account without your permission, or you paid a scammer, contact Komercni banka straight away and ask it to block the payment and your card. The first minutes matter most.
Do this first
- Call Komercni banka’s official line below, or use help inside the official Komercni banka app. Never use a number from a text, a caller or a search result.
- Give them the transaction details (amount, time, and the account or number you paid) and ask them to block your card and stop or recall the payment.
- Change your online banking password and PIN if anyone may know them. Komercni banka will never ask for your PIN, password or a one-time code.
- Report it to the police too: see who handles cybercrime in Czech Republic, and keep screenshots of every message and payment.
Official Komercni banka fraud contacts
Komercni banka (KB)
Bank- Card theft or loss:+420 955 512 230
- Customer line:+420 955 551 505(Mon–Fri 7:00–22:00, Sat–Sun 8:00–22:00)
Email: [email protected]
If Komercni banka won’t help
Financial Arbitrator (Financni arbitr)
Out-of-court decisions in payment disputes with banks and payment institutions.
Contact [email protected] or +420 257 042 094 (10:00–11:00 and 14:00–15:00). Proposal forms are on the website.
Official websiteCzech National Bank: complaints concerning financial institutions
Tell the central bank about a problem with a bank. It does not settle individual disputes.
Complain to your bank first; it should resolve the complaint within 30 days.
Official websiteYour rights as a Komercni banka customer in Czech Republic
- EU Payment Services Directive (PSD2, Directive 2015/2366), Articles 73–74. Your bank must refund an unauthorised payment promptly, normally by the end of the next business day, unless it suspects fraud. If a lost, stolen or misused card or payment details were involved, your loss is capped at EUR 50, unless you acted fraudulently or with gross negligence. Payments you approved yourself, even if you were tricked, are usually not covered. Source
Report it to the police too
Cybercrime agencies in Czech Republic lists who to report to.
Common questions about Komercni banka fraud
- What is the Komercni banka fraud helpline number?
- Komercni banka lists these numbers on its own website: Card theft or loss: +420 955 512 230; Customer line: +420 955 551 505 (Mon–Fri 7:00–22:00, Sat–Sun 8:00–22:00). Always dial the number printed on your card or shown in the official app if you are unsure.
- How do I report fraud to Komercni banka?
- Call Komercni banka's official line, or report it by email: [email protected]. Tell them the amount, the time and the account the money went to, and ask them to block your card or the payment.
- What if Komercni banka will not help or refund me?
- In Czech Republic you can complain to Financial Arbitrator (Financni arbitr), Czech National Bank: complaints concerning financial institutions. Details of what each one handles are on this page.
Other providers in Czech Republic
These contacts were read on Komercni banka’s own website on 3 October 2026. If a number has changed, use the one in the official app and tell us. Ministry of Cyber Affairs is not Komercni banka and cannot recover money. All Czech Republic providers are in Bank Fraud Help: Czech Republic.