Help Prevent Unjust Eviction

Hi all. I have suddenly found myself in a predicament. I, had to move back in December out of my apartment with roommates and into the only thing I could find, which is where I now live. It is a single occupancy room, kind of like a dorm.

During my transition into moving here, the landlord was extremely unprofessional and was actually let go. New management took over, so I have been corresponding with them. It turns out they have not received my rent payments dating all the way back to December when I first moved in, including security deposit and first months. Since I have been making payments, I was so confused to get a notice in the mail.

As someone who works two jobs and has been living paycheck to paycheck, this kind of thing is extremely scary. Since I don't have any way to prove that I have been making payments, I am asking for help because it's either this or the street. Thank you for your time, even if you aren't in a place where you can contribute, please share.