Consultant took advantage and gave me an additional new sim card

In April I app**** for a new sim only contract On the 28April2021 I received my order and to my surprise I received 2simcards The one sim was **********ly given to me because I only app**** for one sim only Not only did the Agent lie on the call about the benefits he gave me another sim that I did not agree on while the sales agent is getting paid for a ********** sale I am being Billed for something I did not apply for and it is affecting my credit score badly I was already prorated nd billed for this and all I want is for the one contract to be cancelled ryt now Kindly please stop billing me for something I did not agree to and can someone take responsibility for this