Help Help Help. NOW internet. What a Nightmare trying to switch to NOW Internet

I am trying to downgrade my service from Performance pro to NOW Prepaid internet and I am told I need to cancel My service first. I went to the Store in Manhawkin NJ and was told the store doesnt do it. I have spent countless hours on the phone with 5 different customer service reps and No one can tell me how to do it without a Gap in service I am in a rural area and without internet I have no phone service.    Can I walk into a store and cancel my service and Sign up for NOW and walk out with the gateway?   Please help