I have the unlimited with hotspot plan. Will the 15 GB rollover into the following month? And if I purchase an additional 15GB one time purchase will any of that rollover to the next month? I am a single mom and had purchased these for my kids to have service at home for school. School reopened and we didn’t use as much as planned but not we just found out that they will more than likely be closing down due to the increase of cases in our area and my billing cycle ends tomorrow.