I have worked in various positions, both in this country, the USA, and several others, where most people were
bilingual or multilingual.
I have often encountered the output of various call centers, some apparently run by people such as yourself.
....one of the many reasons I never accepted a position at “your” type of business.
If you haven’t worked in a call center then you are talking crap about stuff you know NOTHING about. Stick to your own profession. You would suck as a call center manager.