USCIS
填到最后一步，payment信息都输入了， 然后就再也到不了下一步了。只有下面的错误
信息。
1-800-375-5283怎么和客服通知这个系统问题？
Application Payment Status
There was a problem processing your payment information. You may resubmit
payment information by selecting the Continue Payment button below.
Otherwise, please contact your nearest USCIS office, or call the National
Service Center at 1-800-375-5283 to resolve this matter.