cancellation of the contract

my adt alarm contract ended 1 year ago. realize that after around 6 months. I phoned the company and I was told that they renew my contract on month to month automatically. I was told that when I need to cancel it all I need is to phone and it will be terminated immediately . today on the 08 January 2016 I phone to inform them about my intention of cancelling it immediately I was told that I need to write a letter and give them a month notice before cancelling.<br> <br> my dissatisfaction are<br> <br> 1. the renewal of my contract without informing me<br> 2. double deduction without informing me<br> 3. to be told that a letter is need before cancellation which is different from what I was informed off<br> 4. A month notice.<br> <br> I have now realized that policy and procedural issues are applicable when the client needs something but when it comes to the company all is offered is we are sorry and we apologies for the lack of communication. since the beginning of my contract I have never receive any correspondence except when I have to phone the company for that.