What proof do you have about satellites after it is far away from your eyes after it is launched?
I could provide you with their manufacturers. I could find some technical information about them. I could get you information about their launch dates, mission, and orbital characteristics. I could find photographs of satellites being constructed.
We could agree on a satellite that is visible from your location and I could find information that will predict where and when it will be visible and you could observe it.
I could ask you to use any GPS device, as they require a cloud of geostationary satellites to function.
I will produce any or all of these if you'd like me to, you just need to give me some time because I'm at work at the moment.
I can certainly do better than "I would guess they are there." and "I don't have that information".