Telekom technician did not show up twice

I waited for the Telekom technician on 09.05 from 8:00-12:00 and he did not show up. After calling customer service, another appointment for 12.06 from 12:00-16:00 was made and again he did not show up today.

After calling the service team, I was told that the DSL may have been activated remotely which is incorrect as the the page at 192.168.1.1 says that my internet is inactive. At this point, my O2 account remains deactivated. What should I do?