Unlocking a Samsung phone

I purchased a Verizon Samsung s4 phone then bought an unlock number with instructions. The instructions are not very good. I am supposed to use another sim card which means what, getting another phone? I cut one I had to the same size & it should work fine except it is also a T-Mobile & I don't know if it makes a difference. Also the numbers I received are : NETWORK = 00000000 PROVIDER = 00000000 SUBPROVIDER = 00000000 DEFREEZE = 00000000 EXTRA = 00000000. Which of these numbers do I use or do I use all of them. If someone has detailed instructions I would appreciate your input.