Spying by mirroring phone from different device

Please someone explain to me how my messages and notifications , and even text

messages consistently say I have notifications, but when I hit the app there’s nothing there

BUT sometimes I’ll hit the app AND it will NOT only notify me in durring the app session , it will have said it had been either read 15-30 minutes prior or you click on the notification an it’s just gone almost as if someone is reading my new notifications/ text then going to the setting and marking them as unread to look as if it’s a new notification. Anf I find it how peculiar it is that everyime

It wants to start to doing this I get an odd amount off phone calls from India asking me if I would upgrade what kind of phone I had and what: how often do I use my WiFi , if would consider changing it but if not , they would would replace and cable box I had with a new one and if they could get all kinds of numbers

off the backs of of the cable boxes . I feel as if someone is watching my screen through another screen and is told to do so until anything with money or a bank comes up . God forbid they get a real job a not steal from people and think that’s a normal profession and do it with no remorse , with pride .