Ekart Logistics — Regarding cancel my order

Address:

At salahpur, Lalganj Vaishali pin code 844121

I want to cancel my order but delivery boy refuses it and start talking bad language with me .he just arguing that u have to take order .Is that a way to talk to a customer. I ordered over 1000 product but never seen this . This is very rude. I am very disappointed with . Please resolve this rude behaviour delivery boy