Every couple of weeks I keep getting calls from a (Dutch) phone/internet company (Ziggo-Vodafone) who always start immediately with trying to make an appointment for laying some new cable, it's just an appointment, nothing commercial, it's just infrastructure and it's going to happen anyway, and every single time, a couple of sentences later, it turns into a sales call and they tell me my neighbours complain about internet and I will definitely also want to switch to them etc.
Every single time I tell them I don't want to switch and I don't want to get called by them again. And by Dutch law, that means they aren't allowed to call me again. And yet they do. Time and time again.
I just had my most fun call with them, because I kept catching the guy in mistakes, everything he claimed turned out to be false, he made some claims about coax being better which I laughed at (turns out he was talking about a new glass fiber/coax mix that they're selling), and eventually I confused him enough that he handed me off to his supervisor.
And then I did the same to his supervisor, except now regarding the law. That he's not allowed to call me without my permission, and I've explicitly said several times I didn't want to get called by them, and he claimed he could because I have a company (freelancer) and I had to quote the government website at him that even freelancers are protected.
He finally relented and promised to remove me from their system. I really wonder if this will stop the calls, because I believe nothing these people say.