Final answer:
When a customer faces a language barrier, they should speak slowly and clearly to aid understanding.
Step-by-step explanation:
When a customer has difficulty understanding due to a language barrier, they should speak slowly and clearly to help the other person comprehend the information being conveyed. By enunciating words and using simple language, the customer can overcome communication challenges caused by language differences. For example, if an English-speaking customer needs to assist a Spanish-speaking customer in a store, the English-speaking customer can communicate effectively by using simple and clear words, avoiding slang or complex vocabulary.