"Kindly refrain from being rude, failure to comply will result in being blocked."

I have been with Vodacom since 2004. I've never wanted to move from a Network as badly as today. I sent an email asking for assistance in transferring an account from my mom's name to my name. Vodacom said myself and my son should go to the nearest Vodacom. Not only was my initial email not read, as I never mentioned a son, but I received a response of: "Kindly refrain from being rude, failure to comply will result in being blocked." I have never in my life heard a business say this. I am very offended. This is the worst customer service I have ever received. Always thought Vodacom was the best, guess it went to their heads.