我工卡申请了快三个月了一直没消息怎么办?在网上查显示On July 24, 2015, we received your Form I-765, Application for Employment Authorization , Receipt Number WAC....., and sent you the receipt notice that describes how we will process your case. Please follow the instructions in the notice. If you do not receive your receipt notice by August 23, 2015, please call Customer Service at 1-800-375-5283. If you move, go to www.uscis.gov/addresschange to give us your new mailing address.我该怎么办