Erica, when our cell phone contract was up I was determined to not be tied with my AH I went to Walmart and got their Straight Talk phone, works very good $50.00 a month and I have unlimited talk, text, and internet. That could be an option... My dad lives in the sticks on top of a mountain and his phones were not getting good service, my step-mom took my phone for a few days and it worked great there as well as soon as their contract was up they did the same. They also have a lower minute option for $35.00 a month.
I agree with cynical if possible gather what you can and leave for awhile. I hope he did not break in your brothers house if it was him he is IMO a danger to you at this time.
keep safe and keep us updated when possible.