九月份递交pr资料 现在还没收到fn号 请问有这种四个月了还没收到的情况么

您好 我在九月中旬递交pr申请 一月份还没收到fn号 中途12月份发邮件问过 他们回复我
We have received your application and it will be processed according to the date it was received.
是要我再等等么？请问还要等多久呀？