Kpn Travels — Materials not delivered at booking location

We have booked the materials from Chennai to Bangalore on 31st July 2021, During the booking time, KPN executives promised me that materials will be delivered in Bangalore the next day itself. We believed their words and send the materials...
4-days completed still we have not got the materials when I enquired in the KPN delivery location (Shantinagar) they're not giving the proper response about the materials. they are least bothered about with the customers, telling that it is in the Chennai only.
The emergency purpose we have booked the materials, now we are stuck, don't know what to do, our customer is scolding like anything...
Please take proper action on KPN Travels