Shadowfax — Return Parcel Already Picked Up Tracking ID R[protected]F

Dear Shadowfax Support Team,
I am writing regarding my return parcel with Tracking ID: R[protected]F.
The return parcel was already picked up yesterday by the Shadowfax delivery executive. The courier executive entered my building, collected the parcel from me, and left with it. I have the building entry record as proof, which I have attached below.
However, today I can see that the pickup has been assigned to another courier executive. The executive who picked up the parcel yesterday is currently not answering my calls, and the courier executive assigned today is asking me to cancel the return.
I am confused about what I am supposed to do because I have already handed over the parcel to Shadowfax yesterday. I do not have the parcel with me anymore, so I cannot cancel the return or hand over another parcel today.
Details:
Name: Aryan Gupta
Tracking ID: R[protected]F
Issue: Parcel already picked up yesterday
Proof: Building/courier entry record attached
Please urgently check your records and confirm the status/location of my parcel. Kindly ensure that the return is not cancelled, as the parcel has already been handed over to your courier executive.
I request you to investigate this with the courier executive who collected the parcel yesterday and update the tracking status accordingly.
Please treat this as urgent and confirm what action I need to take from my side.
Regards,
Aryan Gupta