Xenophobic behaviour

I am an accredited installer with Multichoice since 2012, and all of a sudden last year 2017, I never had a problem until they change the regional technical representative, from the first conversation with him, I and my husband picked up this Xenophobic attitude with him because my husband is not South African and he is the one actually carrying out installations. But last year 2017, he started with is nasty attitude, talking like he owns us and want to tell us how to run our business, we gave all the information he needed and he told my husband right there that he is not happy that there other people he want to accredit-ate in the area, that he will de-accredite our company for no good reason. We pleaded with these guy, but it appear the more we plead the more his ego grew. We were confused and this almost paralyzed our business. We decided to take it up with his superior, we spoke to the manager who sound like he is going to help, but all he did was to send email to number of people, but none of them respond to his email, this drive to a conclusion that they are all on the same page regarding our issue. The regional technical representative did respond to his colleague saying "do not entertain this installer". This is Xenophobic, replacing an Installer because he is not South African and treating him with hostility is not cool at all from a company with footprint across the African continent.