Ecom Express — Shipment held without a valid reason

My shipment has been lying in their outlet for 5 days. and they have put a remark saying that ecom is holding the shipment due to payment issue. when i spoke to delivery person Vinayak Jadhav he said he tried to deliver it and the security refused. well we dont have a security person at the premises basically nobody even attempted the delivery, he also said he would deliver it today, when called to ask why it wasnt delivered today, he said he cant deliver now he'll do it tomorrow, ecom express provides very bad service and the person didnt even bother to apologize for his mistake infact spoke very rudely.