Putting me on contract after upgrade of line speed

<p>I upgraded my line in 2016-04 from a 4M line to a 10M line. I am on a month to month basis. During the upgrade, the person that helped me made a mistake and gave me a new Account number. When I wanted to upgrade to a 24 month contract for cheaper, the operator told me that I was allready on a contract and that she cannot help me. According to me I am still on a month to month basis. I was changed to contract without my written or verbal permission. I logged a call with helpdesk but never got a reference number. I logged a web call but never got any feedback.</p> <p> </p>