I can no longer afford the internet

I'm retired and on a fixed income.  My internet only access increased by $15 a month with no warning or explanation.  For the record, this is my life line.  I need internet access to stay in contact with my doctors.  I watch television over the air because I can't afford the verizon internet and TV package.   I can no longer afford it.  I assume I can continue to use it and cancel before the new billing cycle starts.