Can I get unlimited data back after losing it?

I'm a Verizon customer on a business account with my work (my dad is boss, and he also wants his unlimited data back)
I had a blackberry bold in 2011 with unlimited data. I got an iPhone 4S and had unlimited data with it also because I paid full price. I upgraded to an iphone 5 a year ago and lost my unlimited data. I go over every month due to the stupid 2gb limit. Anyway I can get unlimited back? TY in advance

No, you can't get it back.

Verizon no longer offers unlimited data.