Do you think Customer Service has been present since the early years of trading?

Thanks 

In somehow yes , but not organized under rules and departments 

Yes! ever since the age of barter system it was there. People form the beginning of trading knew that if they are going to give good customer service, they will surely get profited. It was so efficient in customer service that now a days a more sophisticated version of this is followed by almost all the companies. And it proves to be successful in satisfying their customers and have a great feedback.

off course yes even if in old use without know the since of it

Traditional plus Technology