After waiting for over a day for someone to get back to me on whatsapp from Supersonic, I was responded to with one line and then the conversation was immediately closed:
"Good day ,the line has been tested and we could not find a fault ,we do not have control over international sites"
Wow. They took no accountability for any of the problems with my line, and proceeded to respond with completely irrelevant and disingenuous information.
While they might not have direct control over international sites, saying that is completely absurd. It's like saying that they don't have control over any particular website besides their own and so they are not responsible that you have a 100 bit/s connection to youtube. It means nothing.
It's gotten to the point that they flat-out lie about their responsibility to provide world wide web access to their customers.