Dg Shipping — to cancel my cdc

Address:	Virudhunagar, Tamil Nadu, 626001
Website:	dgshipping.gov.in

I have applied for CDC for 8 months but I did not get me cdc they say they want to verification my 10th marksheet but they did not even dispatch my 10th marksheet to Chennai to check it.i don't know what to do please help me .I have called their helpline but they are not responding to me.they say they have dispatched my mark sheet to chennai on 12th December 2018 but in chennai office they say they did not receive any post from mumbai maritime office

Please i want to cancel my application in mumbai
So I can apply in chennai

Indos no:14EL3288