DTDC Courier & Cargo — my parcel is lost. it's not delivered and not returning back

Address:

560034

I sent a parcel with consignment number b50163650.
It was supposed to go to chennai.
But somehow dtdc messed up and it is showing on the e tracker that pin code is not correct. However i double checked with the branch from where i have sent the package and on the receipt pin code is correct.
The actual pin code was 600002, but on e tracker it has been changed to 600020, which is clearly the mistake from the courier company side.

Please look into the matter. Either return my package to me or deliver it.