> On the other, too many customers are complete racist dicks to people who they perceive as not "belonging to their country"

nunez alluded to the reason why people will do that. And no, it's not racist in the way you're trying to frame it.

The callers are angry that they're being forced to talk with people which don't even speak their language well enough for it to be a non-issue. Despite being paying customers.

Because the company had a genius MBA which wanted a bigger bonus, so they outsourced/offshored it.

These workers may not deserve this treatment, but it's completely understandable - and the foreign workers ARE the representative of the company doing this shit. And thus... Framing this behavior as racism will not help your message whatsoever.