Hello,
when going down in the card settings the phone number shown to call the Mastercard Global assistant center is the US number which you can see here:
But wouldn't it be better to show the German and the Netherlands number?
German: 0800-819-1040
Netherlands: 0800-022-5821
You can find the numbers on Mastercard official page: http://www.mastercard.com/sea/consumer/global-services.html