The bill came in for all the calls I made to Ziggo's customer service. I see why they have long waits on "hold" and a useless but time-consuming script for customer service. And I called enough times, and got nowhere all of those times, enough to know their script by heart - up to and including the part where they put me on hold to listen to music for several minutes before disconnecting me.
Bottom line: I ended up paying Ziggo for one month where I had no internet service because Ziggo was too lazy to re-set or repair their malfunctioning gateway. I paid Ziggo more than the equivalent of one month's internet service for the pleasure of calling their customer service line. They have maximized the art of making money by doing nothing!
Goodbye Ziggo - I found someone else!