I had this happen a couple of years ago, I said I would think about it and maybe I would go ahead.
anyway I never heard anything until a few weeks later a booklet turns up with a simple advert in it, it was supposed to go to every doctors surgeries in Birmingham.
A few weeks later I get the call for payment, I disputed that I agreed to anything, pointing out that I have a PDF file that I use for all my adverts, and what they did is nothing like what I use.
They then come over all stong armed, by demanding payment and if I don't, then this and that is going to happen, I did say they are quite welcome to come and try to collect the money from my house, they had threatened to do this.
They even suggested I was being threatning on the phone, as if I would

and the call was recorded and would be handed to the police.
I'm still waiting for the visit and after some checks no doctors had recieved the mag.