Unauthorized mobile account

I received a text from Xfinity regarding a mobile account that I do not have. A few months ago I received a solicitation from Xfinity about 1 year free service. I was told to get a pin # from my current provider, when I gave the # to Xfinity I was told they were unable to transfer the service and needed to go back to service provider. At that time I told them I didn’t want to be bothered transferring service any more. So when I received text today I first started a chat then called in and told a # was assigned to me and I would have to make a payment in December. I told agent that I never had an account or #. After about an hour of sending emails he said I needed to accept for him to authenticate the account (which I thought was ridiculous ) he said this fraudulent account set up by Xfinity staff has been canceled as of today I have yet to receive that confirmation. 

I am so frustrated and will look for another internet service provider I can no longer trust Xfinity with any of my information. I need confirmation that this fraudulent account has been removed from my account.