Unprofessional Staff

A salesman from Samsung contacted my company today to sell me products. I stated that we were not interested to which he responded by saying he wanted to speak to the authorized person - which is me. He then proceeded to belittle me and my position by dismissing my qualifications and lecturing me on how to do my job. Is this how Samsung treat customers? If so, your staff need serious customer service training. It has put your company in a bad light and I don't wish to do business with such an unprofessional corporation!!!!