Delhivery — Very bad service for parcel delivery and no customer care number

Hi have purchased some books and it is shipped through Delhivery on 4th October. Till now it is not delivered. TRACKING ID:[protected]. There is no customer care numbers. the only way is to communicate with them is by mail. But they did not reply properly or do not reply at all, as we are simply negligible to them. They just got their money for delivery now the customer will suffer if they wish they could deliver the parcel. Very bad customer support, I think Indian Consumer Forum takes them seriously.