Foundever Customer Service-work From Home interview questions

20 minutes phone interview. I passed all preliminary exams and I received an email that I was approved for a phone interview. I answered positively all questions, I have experience working from home and I can be available for all shifts. Few hours later I received an email with a negative answer that I am not approved. There was no reason for declining my application. The interviewer was subjective because I have a slight foreign accent. This could be the only reason which is unfair and discriminatory. I think some people pretend working to justify their salaries. They call naïve people from time to time.