LOJ status taking too long !!

I switched employer A to employer B, which somehow resulted in LOJ, my new employer submitted all requirement to sponsor my clearance, i finished all reinvestigation thing, now I’ve been told it’s under review by the government, but it’s been over a year and a half and adjudication still not finished!! i have an Absolut clean record, no incident reports, not even a parking ticket !! I’ve read all about it and the most common thing says it should take no more than 180 days to be completed! yet it’s taking way too long !! please i need some guide of what to do in order to get this done? anything please?