The Professional Couriers — courier was misplaced and very rude/illiterate behaviour with customers

Address:

2nd Cross ,Kasavanahalli,, 560035

I have one of my bank document being dispatched, through professional couriers.
Firstly, no one contacted me and dispatched my courier without my information to the bank branch.
Secondly, when i am enquiring about it, the customer care lady was so rude and arrogant that she was not at bothered about my query.
Thirdly she gave me multiple numbers for further enquires and all were switched off purposely.
Fourthly, the lady started yelling and challenging that do whatever you want to do, we can not do anything in this.

What type of services these people are giving.
Can someone help me on this.