6 months ago, I applied for a Telekom connection. But because of infastructure problems it didn't happen. Time to time I got calls from Telekom shops about if I want an installation appointment and start a new contract. I'm saying I already signed a contract with an other provider so I don't need it. Then they say okay we noted that down, after a week or more another shop is calling about same thing. Today was different, a guy called and said my landlord already agreed for just an infastructure installation. So we need to create an appointment. I said okay if I don't need to pay anything. But after he created an appointment, I instantly got a contract in my email. I believe this is a scam and I have no idea how they can send a contract without my consent. How can I cancel this?