See, there are multiple things that could be wrong here first, I would suggest you force the technician to go and check the splitter ( white rectangular box inside your home) connector then see if power is high and correct it, if the problem is fixed , if the problem persists then we’ll take it from there
I’ve been using the service since late 2019s , yet to face a single downtime but I’ve had many similar experiences with my acquaintances in the past helping them fix those and let me tell you, you’re not alone bro