Paytm Mobile Solutions — rude behavior of a delivery boy

Sir
I want to say that your delivery boy named mr. Vinod kumar
M. No. [protected] is of very rude nature. He behaves very rudely with us.
He teases us by many ways like he himself cancelled our ordered products or located us unavailable. Which resultant cancellation of our product.
When we used to make contact him
He refuse to take our calls or talking rudely or sometimes using offensive language.
I do hope that concerned authority will take initiate action so that in future we will not have to suffer from such inconveniences.
Thanks