One can only be happy with their internet service provider.

I used to be anti- Deutsche Telekom until I worked for them. Then I got to delve deeper into the structures of all this and can apprechiate their service.

For example, today I filed a claim for a slow internet connection via contact form, which was then solved by distance-reset within less than 15 minutes and finished up with a call from them. And when something actually breaks, the free hotline sends new hardware (happened before, too).

Just saying this because I have many friends who never hear back from their phone/internet companies when they have problems. That is what happens when you want to spend less and less and less.
And I get no special treatment, I pay like all other costumers.