DTDC Courier & Cargo — Product is not delivered to destination - Consignment no. F[protected]

My consignment number is F30145312, and my package is not delivered at Anchor Building, ITPL, Whitefield . From last three week, it is showing the same status. Receiver's address is 5 km away from Whitefield DTDC Office and 3 weeks have been passed since it arrived at Whitefield DTDC OFFICE. I called customer care but they are not telling me why my package is not delivered and they give some other number, which are not attended even after hours of call. I have called multiple times on DTDC customer care and lodged complains in DTDC support. You can feel my frustration, as this was my first experience with DTDC. I am regretting, why i chose DTDC.