Hello,
Thank you for contacting Steam Support.
We are currently unable to assist you in your preferred language. In the meantime, we will continue to support you in English.
We apologize for the delay.
Our records show that one or more purchases on the account you provided have been recently disputed by the credit card holder. We've found that payment disputes typically occur when the cardholder identifies unknown charges on their bank account, or finds purchases that were made without their consent.
In order to protect the Steam account and the cardholder from additional unknown charges, this account has been locked to prevent further purchases while the dispute is being reviewed.
If the charges are legitimate, the quickest way to resolve this matter is to reverse the chargebacks by contacting the card issuer; doing so will automatically unlock the account. Please note: this may take some time depending on the card issuer's policies.