Indian Post Office — Delaying in dispatching the letter

Address:	Ranchi, Jharkhand, 834001
Website:	www.indiapost.gov.in

I have posted the letter on 13 april to arvind kejriwal, kanhaiya kumar & manish sisodiya( tracking id- ej[protected]in & ej[protected]in & ej[protected]in) and its not been dispatched from ranchi, and on the same date i have posted from same post office to the west bengal cm mamta banerjee and yesterday on 15th april it was delivered to her.. Its seems totally wrong, its an important letter kindly help me out..Hope indian post office is not playing the political game