How can I add data to my phone that is not supposed to disconnect until the 15th
When logged into My Verizon, you can either go to Perks and Services > turn on the toggle for unlimited data, at which point you will be prompted to load funds into your account and then you should have the extra data after paying. I have never had to use that unlimited data add-on, so I don't know if that's just a one-time thing or if you will then be billed extra for it every month from then on until you shut it off.
The other way to change to unlimited data is while you are on your home page in your My Verizon account. Where it says Current Plan, go to Plan Details > Change Plan. If you upgrade from there, you will also be immediately prompted to load funds into your account and then the change will take place.
