Does Lowes Think It's Employees are On Call?

I've been asked to come in early twice in a row just this week, I declined the first time and accepted the 2nd, but it's getting fucking ridiculous, they won't hire someone else to schedule in between and instead keep asking me and I feel like my good nature is being taken advantage of lmao. It's like this every week, yesterday 4 calls, and a voice-mail, today 2 calls and voice-mail, I guess my labor isn't enough for these people gotta interrupt my sleep too.