Unfriendly Call center agent upgrades my contract without permission

<p>Hi</p> <p> </p> <p>I was contacted by a call center agent persistenly to upgrade my contract on the 5th of august, i told the agent that i will be waiting for the new galaxy note 7, the agent laughed me off and told me that the note 6 hasn't even been launched.</p> <p>I told him to do his research, he then told me he will bar my line and then he procedded to upgrade my line.</p> <p>i didnt think anything if it because my line continued to work as normal. I then learnt yesterday that he procedded to upgrade my line . WITHOUT MY PERMISSION,</p> <p> </p> <p>Call center agent from CCI and name is dashwin or something like that,</p> <p> </p> <p>Please can you help.</p> <p> </p> <p>This level of service is Terrible.</p>