Hi, Couple of months ago, one person came to me and said he was from Vodafone and need to checke my TV cable connection. He only spoke German and I did not understand him. He said something about the TV cable need to be updated. Then I got a bill about Vodafone TV Connect Pro. I did not sign any contract to say I need this, but it charges automatically. I do not understand why it was happened. Can I cancel this service?