Childish consultant

While trying to cancel my original topup contract because vodacom sold me a new package, after the 3de consultant i phone which was not rude or understanding i got to Wilson. I went straight to the point of cancelling what i wanted and Wilson started, what i thought trying to sell me something. I stopped him and explained what i needed be done. After a discussion i understood what he wanted to tell me about. But then al of the sudden he tells me NO. I stopped him the first time so why does he need to explain it to me again. After several requests he kept on with his story about how i rejected it the first time. Unacceptable...