"Employers are looking to hire cashiers with great customer service skills and experience handling cash. In preparation for an interview, come ready to answer role-play questions that will assess your ability to appease difficult customers under stressful circumstances. Make sure to showcase a positive and easy-to-work-with attitude that will convince your interviewer you're right for the job."
Tell me about a time you had to deal with a difficult customer? what was the situation and what was the outcome?
I once had a customer who was very upset because her credit card was not being accepted by the POS device. I advised the customer it was an issue with the issuer and not the store. The customer did not want to use cash but did have cash. We even tried to use a different register to rule out that it may have been a technical issue, and the customer thanked me for trying and not making her feel dumb.
Reaffirming her concerns along with avoiding the embarrassment or awkwardness to her and customers surrounding her. Utilize efforts to assist the transaction by means of swiping the card fast, with paper or Maverick plastic sack also try to run her card at the gas pump it could very well be her magnetic strip(s) as they contain may have worn out and she would need to contact her bank for a new card to avoid a lost sale, I would empower her to make the choice of payment and be empathetic towards the situation as I'm sure the funds are available. Also offer the error code to her so that we maintain her as a customer and so that she may properly inform her bank.