Best Buy Retail Sales Associate interview questions

How I kept up with new technology. How I dealt with difficult customers. Had I services or assisted customers in prior roles. What was my background. With a BS, MBA and over 25 years of IT experience assisting people, vendors, etc.. I did not get the position. I also had my own PC repair and sales business for 2 years about 12 years prior. And I had experience in floor sales and customer service for a short time with JC Penney and Amazon. The interviewer seemed impressed and was to pass the info to the general manager. I was rejected. I distinctly feel there was age bias and they preferred a younger person.

Give an example of overcoming rejection or disagreement.