DTDC Sarakki Bengaluru - Prepaid Package delivered to someone else

My ordered was scheduled to be delivered by DTDC and was given a tracking number, after a few days( today , **/**/****) I checked the status of my order on their website tracking option and saw that it has been delivered, later I downloaded their delivery chart from the tracking page, someone has signed under my name and given my number, they haven't checked their ID or anything, just handed over the package.
Upon discovering this, I called their multiple helpline number, they didn't receive most of them, one of them received but they didn't offer any help !
I went to the hub that had my order , in sarakki, near banashankri , Bengaluru, got a complaint registered, they informed me I would get a call from te delivery personnel, however, none of that happened, I asked for an acknowledgement, they provided nothing, an absolutely frustrating experience!