Why do people look down on me just because I do this business?

I work as a receptionist in the tourism and vacation hotels.

Even though I know 3 languages, I am good at computers and hotel programs, I am good looking and got a college degree.

But some clients and bosses always mocks me or makes me feel down and looks down on me or other receptionists like we are slaves.

Why do people look down on me just because I do this business?
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