agent that is dishonest

I was phoned today to upgrade or move from one contract to other. when asking the person if this is a contract or migration it was said it is migration. I told the I don't want a contract I because I am going to cancelled the contract when it finished because I don't want to continue with it. He started to be rude to me. I ask him if I could speak to his supervisor he did not want me to and started to be ****y with me. i drop the phone. If this is wat Vodacom employees does to cheat customers in doing things they don't want to I see you will lose us. not happy