DG Shipping — delivery of indian seaman book

Address: DG shipping Mumbai, Shimla, Himachal Pradesh, 171205

I am a seafarer and had applied for indian seaman book (Cdc) in september 2017. The address at the time of applying was for delhi.
It took around 3 months to get that cdc delivered but i relocated to shimla which is my home town, so it got returned undelivered to dg shipping mumbai.
It tried several times to reclaim it through the e mail and i went by myself to the office of dg shipping mumbai but nobody entertains you there.
The people at the entrance of the office will not allow you to see or to meet the shipping master, however they will ask you to write e mail, from which you will never get a reply.