Very bad customer experience from Vodacom call centre

Absolutely the worst experience I had when trying to get a new contract from Vodacom, consultant that phoned me had the worst telephone manner I have ever come across. He was talking so fast and also in other languages, when I asked him after a question what language he was speaking in he verbally attacked me and called me rude. Making me feel as if i did something ****** and that was not the case at all.