Himachal Road Transport Corporation [HRTC] — Irregular service of bus

I am regular pessenger of Himachal Roadways bus. A bus which is coming from Solan to sultanpur is not coming regular, earlierbit was from solan to sultaanpur but since last few months this bus has stopped and now it comes from kumarhatti to Sultanpur. But this is very shameful that it comes very rarely sometimes only twice a week. Due to this irregularities passengers have to suffer as there is no other buses. If we called in the office of Solan ISBT then they said bus will come and some times they make excuses like bus has no fuel etc. Plz do some favorable step for passengers and plz start Service's again asap