1.Approach High court for a speedy trial /disposal within a time frame
2.If private complaint case absence of complainant can be a ground for dismissal of the case u/S.256 Cr.P.C
If case instituted on police complaint complainant is only a witness and he will come only after the start f trial
3.See S 317 Cr.P.C
4. Yes on proper grounds.
5.Discharge ,Quash .