Delhivery — Delaying in deliver

Delhivery is such a worst courier company. They was supposed to delivered my product on 23rd and since then they are extending date to another day. Today is 3rd Jan 2022 and I didn't received it yet. They have such a worst service, they don't have proper mail or calling system to reach customer care. Delhivery hub is not so far from my home, hardly it is 4-5 km far. still they haven't delivered it.