Dear @Gagan_Kumar
You can request a new bus for the route of Baddi to Ambala from Himachal Roadways (HRTC) using the above contact details of the Managing Director or lodging a public grievance online through HP CM Sewa Sankalp - eSamadhan (cmsankalp.hp.gov.in) portal or calling at the toll-free cm helpline number 1100.