Family Dollar complaint: Availability

First off I have tried calling to talk to someone and they yet to reach back . I am a fairly new member to the family dollar company and sadly recently my manager has been going thru issues which laid her off for a bit . Me being new and small part time I understood more hours were available. They made another manager in charge of scheduling and she sent me a pic of my schedule and it’s way out of my availability due to me being a single mom with no help remind u and I told her I would try and figure it out but this isn’t my availability so next week isn’t the same issue . Thru text message she tells me I was hired on with open availability which I wasn’t she didn’t even hire me on ! And told me well I need to take it or leave it . I told her this conversation went south and she needs to figure out the schedule and I wanted to talk to the dm jake which I still yet have done. Tomorrow being Tuesday I’m scheduled and I don’t know what to do I can’t come in the time I’m scheduled I don’t think it’s fair I have to miss out on money and I’m
Being treated and talked to like this . Everything is on text and is saved and I will try to complain to higher if we can’t resolve during a time like this isn’t a good time to mess with someone’s lively hood and I’m just trying to live .