Technology problem

So I know this isn't really <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> worth, but I have a question. My dad and I live in a apartment together and he just left for a trip to NY and we got in a huge fight so he took the wifi modem, shut off my cell phone service and left me with no car or food. So I wanted to somehow get to Walmart and either get one of those wifi hotspot boxes or my own whole new phone all together. I'm obviously on the cheapest budget like ever too. I think I'm leaning towards get a hotspot box because then I can use wifi at home instead of spending all my time at Starbucks and using all their wifi 😂😂. But I guess my question is what is the best, cheapest hotspot box to get from Walmart? Because right now my only option is Walmart since it's the only store in town. Does anyone have a hotspot? Do you have to pay for it every month? Or do you prepay it, or pay as you go? What's the best deal??! Help a sister out!!??