It should be noted that the person who called them Indian cowboys has no relation, direct or indirect, with ZenDesk. That tweet is masterfully used by FreshDesk to stir emotions in the reader.
Girish, you pull in a random quote about nationality from a source absolutely unrelated to ZenDesk as a means of sensationalizing your argument. It's a valid conversation and thread of discussion, but it has nothing to do with your dealings with ZenDesk.
If your product is as good as you say it is, I'd leave out the part about nationality and focus the message on your product, not incendiary sensationalism.
edit: Thought I'd add: I'm from India and am not associated with ZenDesk, FreshDesk or any other Desk company.