Can you go back to where you signed the contract with the nice sales guy?

It looks like nobody was in your flat before and they charged you extra for the the technician to come and visit you. If you connected it yourself you wouldn't have had to pay the following,
Basic Abonnement Kabelanschluss, von 1.9.2011 - 31.12.2011, 92.80chf
Service Plus, von 1.9.2011 - 31.12.2011, 8chf