Unknown sims come in house

Hi, 

so I’m having a very frustrating issue. I have several sims just walking  in my house, none of my family members have ever met them before and there is no way to kick them out. They eat my food, play with video game and basically make themselves at home. 

I already tried locking the door, changing my lot to private and also to the traits where sims aren’t supposed to come visit, I have no mods.

The weird thing is that it happens in all of my houses, I have several different home and in each of them when I play this happens.

i do not have sims celebrity so they are not paparazzi. I don’t know what’s happening, they keep eating the meal I JUST cooked 

Please I can’t deal with this anymore 

My electric bill was 20 500$ 

they come in groupe of two to four Sims 

it’s  so weird

plus I’m using XBOX ONE