Hmm. I remember seeing something similar. A call service to mobile or landline. (No sms though so that rules out the big companies)
But they do accept bitcoin and other cryptocurrencies.
Here:
Xcoincall and they're
thread and their website :
www.xcoincall.com Oh and there is Nexmo. It should work with the big companies(Microsoft, Uber, Google,etc) but as far as i know, they don't accept Bitcoin yet. Still, check it out. :
https://www.nexmo.com/I don't think you got my question right. I'm not looking for services that are able to call companies like Microsoft , Uber , Google and I'm not looking for anything to make calls (at least not normal ones).
I want a service to send both SMS and call automatically for 2 Factor authentication verification that those "big companies" use , In other words a reputable service just like Twilio but they should accept Bitcoin