Harased for an account that i never had

<p>Nimble has been harassing me for months about an Autopage account that is in arrears. As I told them every time I never had an Autopage Account , by the 5th person I spoke to told me to fill in an ***** form. I mailed it to them, but still every other week I get an SMS from them telling me I need to pay my Autopage account. When I phone they tell me to contact Autopage ( That closed down). How am I ever going to get rid of this place harassing me?</p>