India Post — failure in delivery

Address:

533105

My consignment with tracking number rc[protected]de is showiing status as
Retention reason : retained by customs for unspecified reason, i have visited the nearest post office they didnt gave any response and asked to wait for some more time, then i mailed web services head and he didnt even reply so i request you to resolve this and send my item asap as it is already one month delayed