When you go to a shop or office and you ask for the manger for help or for a complaint etc that is in person customer service as you’re in person to receive the customer service.
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I honestly don’t understand the question, I just did a random guess
Answer:
Aliko Dangote from Nigeria is a good example. He has greatly made contributions to the food service. He deals in foods and other ingredients in preparing foods. He is a great man known worldwide for his contribution.