Am I wrongly fixed, My HOS is not taking action

I am working as PST in SKV.GNCT.Delhi. I have a query on pay fixation. My basic on 1.1.06 4750/-but my HOS fixed me 9300(min.of PB-2).acc.to spc rule 7a(i)(ii)with para ii deals bunching bnefit of seniority. Now i want to know whether this benefit is admissible in this case or not.i sumbit my reperentation to HOS but no action is taken till date.to whom i should contact for removal my genuine greviances.is it anomialy? Or lack of awareness on the part of HOS/DDO.please give me advice on this.thanks.
Rakesh Bhandari