Xpressbees Logistics — complaint for late delivery and staff attitude

My name is jay parekh and my awb no is[protected], i was expecting the courier yesterday as it is mentioned on xpressbees tracking details but still the courier has not arrived, i called them yesterday i. E on 22.05.2020 on their customer care no and spoke with a lady yesterday, she told that due to the manpower issues we want be able to deliver the courier today we will deliver on 23.05.2020, but today also i have not received my courier hence i called the contact center again and spoke with a guy name nikhil he told that before monday your courier will not arrive so i asked him that if that's the case why is it mentioned 22 may as delivery date on their website, so he is telling me that their sales partner has mentioned that and xpressbees is not responsible for the late delivery, so i just want to understand that if xpressbees is not responsible then why are they giving their awb no and why are they putting tracking status on their website, are they just sitting to gain profit, and i told him that i want to speak with his manager so he started showing me attitude and he told that it will take 24 working hours to arrange the call back and as tomorrow is a sunday it will not be counted as a working day, so i got pissed of and told that i will not hang the call until he connects to his manager, so he gave me a false assurance saying that he will arrange the callback by eod but still i haven't received any call from xpressbees, hence i want to complaint against xpressbees and nikhil as he have wrong commitment, firstly they are not delivering on time and showing attitude, i have also conplained on their website and i am attaching the screenshot of that aswell, kindly take strong action against them