Passport Office Guwahati — passport delay for several months

Address:

797113

I applied for passport along with my sister from passport kendra office Dimapur and submitted our applications by 23 March 2018. We completed the process and also did all the police verification together with the same required documents. Now she got her passport some months back around the month of May while mine still shows pending for police verification at RPO Guwahati. We did the same verification together at Dimapur itself so how is it that her passport came while mine is pending for police verification. I submitted a grievance in the passport website but nothing has been done.
The file number is GU[protected] and the grievance service number is [protected].