DTDC Courier & Cargo — Package not delivered to me.

A courier number X33364279 was shipped from noida to hyderabad chikkadappi DTC branch 3 months before on 22nd may 2020. I did not receive the courier since then and when i went to the office they are saying they did not receive the courier
The online tracking statement says its delivered to them.
I am being forced to go from one office to the other during this pandamic situation and none of them are helping me.

Neither does the customer care people answer the call to resolve the issue.
One of the branch says the courier is untraceable and i should opt for a refund policy.
Please do let me know the other steps of approach.