India Post — Speed post not delivered after 8 working days

Address: Bageshwar, Uttarakhand, 233631

I have sent a speed post from madivala, bengaluru on 12th aug 2016 to bagehhwar, dehardun. But even after 8 working days it;s not delivered, when i tracked the status of post online, it shows dispatched from bangalore to lucknow. This status is not changed since 14th aug.

I registered a complaint in india post online, it;s not use.in person i went to both bangalore & deharadun post office, bangalore i was told check in deharadun, at deharadun they said parcel not received.

Not sure whether i should go in person to lucknow and track my parcel by myself. Please help what's the next thing i can do.