DTDC Courier & Cargo — parcel not delivered to me n still showing delivered on dtdc website

Address:

A/3,Arteshwarnath mandir, Sanjaynagar,sunderbaug, Kamani,kurla west, Sanjaynagar,sunderbaug, Mumbai City, Maharashtra, 400070

I was sent a parcel from delhi to mumbai at my place on 7th of may through dtdc courier. On 10th of may, at around 10 in evening, it was showing as delivered on their website. I i formed dtdc about this through a complain form availble on their website. I waited for 2 more days and informed dtdc about the same on 13th on twitter. I was told to wait n i'll be responded very soon. After a couple of days, i still kept on asking on twitter, i tried calling too, yet no positive response. Each time i was told that my complain has been registered and i'll be reverted back. I kept on contacting, n each time was told the same thing. Today, on 21st of may, i called on dtdc mumbai no... Was told to contact dtdc mumbai office. The nos given were out of service. Then again i contacted them n told about the out of service nos, was told to contact mr, ashish mohanty, branch mgr of dtdc office, at ghatkopar. I tried calling him from 1:45. No response, here i assume it must be lunch time or something. I tried calling him after 2:30, he is not picking up my call still. Many a times his phone would go busy, yet not answered a single call of mine. I don't no where my parcel is, to whom it has been delivered, is it still with dtdc or they have misplaced it. I am in urgent need of the parcel for some urgent work. I have decided to turn towards you for help. Plz help me as early as possible as i feel cheated by dtdc here. My shipment id is d50933656.