deathcertificate

hello sir mera naam nishant kumar h..or mera papa 21agst 2017 ko xpire ho chuke h..to m apse janna chahta hu k kya..ek baar deathcertificate banne k baad...kya death certificate ko cancel karaya ja sakta h...or agar ho sakta h to kya us me...death date change ho sakti h..jaise ki 21agst 2017 k alawa koi or date ho sakti h death vertificate m...plz help agar aisa ho sakta h to ap bata dijiye...muje...plz sir