Getting a job is like selling yourself to the company. We get a certificate to make us marketable. The interview process is like negotiation between a buyer and the seller. Since you are selling youself, you must be presentable and polite. Would you buy a product that is not seal properly or broken?

Remember, customer always right. So no matter what the interviewer asked or did, he always right. Don't be so negative if you fail the
interview. There always another buyer. Keep looking for a new buyer. I'm sure someone will soon pick you up.

Cheer..