A lot of our members have dealt with them with the same results. You are definitely not alone.

I've had great experiences with Westbury Nissan service, and Performance Motorsports (adjacent space) is owned by Westbury Nissan.
They installed my rear ARB locker, calmini t-case gears, and replaced my clutch with the centerforce DF version. Great service..

If you're local, check out LINXC.COM
Long Island Nissan Xterras Club.