How to calm anxiety !?

Hello ladies, I need help on how to calm my anxiety. So I realized my anxiety can be bad sometimes especially when it comes to my Mom & sister but mostly my Mom. My Mom & sister works while I stay home with the kids & babysit. So when My Mom & sister is at work & they get off early they don’t tell me. When they come home they like to sneak in the house quietly & scare me by pretending someone is breaking into the house etc. this is the 5th time they did this to me & I really hate it because I had anxiety & depression since being a young little girl in elementary . They know I get scared & I don’t like it but they laugh at me & find it assuming when I’m scared. They do it all the time & when they see how scared I get & my anxiety is high they tell me they will stop but they will just do it again. My anxiety was so bad I called 911 & when they came my sister opened the door & told them “we came home early & my sister didn’t know everything’s okay”. & it made me upset because they prank me by doing this many time. The house we live in has a history of people breaking into it since we live in a private land. I just want to ease my anxiety because it’s clear they will continue to raise my anxiety & laugh at me😕🥺any tips??? On how to ease my anxiety & not react in a situation like this .. thank you!!❤️