Who is the sanctioning authority for pension?

I am pensioner, commuted for the first time after fixation of revised basic pension on the basis of W.B. Govt Memo No. 209-EDN CS/IP20-1998 (Pt II). Memo states: "Pensioners who want to commute for the first time after coming into Revised Pay Structure w.e.f 1.1.20 shall also be eligible to commute a part of the Revised Basic Pension subject to a maximum of 40%. In their case Commutation value expressed as number of years of purchase for the age as on next birthday on or after 1.1.20 shall be taken into account. Such a commuted amount shall be restored after 15 years from the date of retirement . So, commuted amount of pension should be restored after 15 years from the date of retirement ( from 01/09/2031). But now, it is seen in my pension slips, that The restoration of my commuted pension would be done after 15 years from the date of payment of Commuted Value of Pension (24/06/2038). Can the Pension Sanctioning authority flout the Government Order?