Hi, volunteer here; don’t shoot the messenger. SR is never refunded, for any reason (more info on that policy here). 
VPNs are a suggestion for a quick fix, a way to let you get back to playing. Since only players on that specific ISP are being affected, it seems the issue is with the ISP. Blizzard can’t control Verizon’s network or how speedy they are to fix things. Since you are Verizon’s customer, have you talked to them about the issue?