All I'll say is that I've never had any trouble with Verizon. And when I've called with similar (if not as drastic) issues, they've always been willing to offer suggestions on the best plan for my family.
Your leftover minutes may vary...
We’ve found Verizon to be reasonable except with this package deal with our landline.
It was they who did the package plan (taxes and surcharges extra) so the $59.95 /month rapidly went to about $80 per month (Thank you NYS)
When they tried to sell us the *new* cheaper plan if was something like $49 or $39 per month, but they wouldn’t tell us the final cost with the extra charges and taxes on it so we wouldn’t take it.
We didn’t appreciate the duplicity.