Affordable home internet for job applications - any advice?

I use my phone as my only connection. I worked as a quality inspector before this. Employers call and email constantly. What else should I consider?

Thanks for writing this out. I went through something close to it 7 months ago, and it settled down once I kept a simple log of every call and form.

Libraries lend Wi-Fi hotspots in some towns. Mine lent one for three weeks.