You will have to file the benefit or insurance claim directly with Mastercard
To file a claim online, please visit Mastercard at Mastercard Benefits
You can also contact Mastercard by phone at 1-800-MASTERCARD or +1-636-722-7111 when traveling abroad, or by email at mcresponse@ufac-claims.com
For more details on your benefits and insurance provided by Mastercard, please visit Mastercard Benefits