Firstly, how the F do you know that they are Indian?
Secondly, its not of their choosing, the American company that hired then (directly/indirectly) wants some friendly names that they can pronounce or say easily, not because they want to disguise.
Thirdly, only cheap people who do business with cheap companies get calls from Indian call centers, or maybe you are Indian or doing business directly with Indian companies, mainly financial organization. So its your fault in the first place that you are getting calls from India. Myself, or anyone I know never get calls from Indian call center.
So... final word, get a life bigot.