If you got your exchange Note 7 and didn't get the 25% accessory or bill credit...
Get on Twitter and send a tweet to @VZWsupport and let them know. Once they respond and follow you, you can DM (direct message) them all the account information they will ask for and make the necessary changes on the spot.
I got my $50.00 bill credit within 2 direct messages. (I replaced 2 Note 7s on my account)
Also, once you have established this relationship with their Twitter support handle, it is easy to just send them a DM any time you need help with anything instead of waiting on hold via phone, live chat online, etc. For me personally, it is a very convenient and efficient way of handling questions/issues with Verizon because you're in a private chat that can go back and forth as short/long as necessary until your issue gets resolved. Again, like anything in life, your attitude towards them being optimistic versus sarcastic/condescending will determine your outcome. I've always gone with the "kill em with kindness" as a general rule and have always gotten great service.