How i can get this anamoly removed

I was appointed Assistant Teacher on 14/10/1998. later I was promoted to the post of T.G.T. on 25/08/2006. I have been drawing much less salary than those who were newly appointed after my promotion.I am pasting the details of my Pay Fixation as under -

Pay Fixation

Bhim Singh
Designation on Jan.01 , 2006 Assistant Teacher
Status Substantive
Pre Revised scale 4500 - 125 - 7000
Existing Emoluments on January 01, 2006
basic Pay 5375
dearness Pay 2688
D A applicable at AICPI 1935
Total Emoluments 9998
revised Pay band and PB - 2 4200 grade pay 9300 – 34800,
Pay in revised pay band/ scale as per fitment 10000 grade pay in term of rule 4 ccs (rp) rules 2008 - 4200

date of next increment 1-Jul-06
Pay after Increment 14630
Pay as on 1-7-2007 15940 (including PB)
Pay as on 1-7-2008 16420

other information
Promoted as T.G.T. on 25/08/2006
b.p. 14630 3% 440
New Grade pay - old grade pay 4600 - 4200 = 400
Total 15470 Pay on 25-08-2006 5375
Pay Notionally Increased by one increment in lower scale 5500
Pay Fixed in promoted scale 5500 – 175 - 9000 5675
Kindly help me how i can get this anamoly removed.

BHIM SINGH