India Post — registered post not delivered for more than 3 weeks

Address: Bharathiar University, Coimbatore, Tamil Nadu, 641046

Documents to wes, canada sent through india post with tracking ref: rt[protected]in and rt[protected]in on 16 december 2019 is still not delivered and status online in their website shows item bagged and then no update. Have registered 2 complaints in india post website and both are still unanswered. I have contacted the coimbatore branch post office and they informed that tracking is only available till chennai post office and from then on i should get updates only from the receiver and they have no update on the status of post. Kindly help to obtain a status of my documents.