If I entered the code with the netflix gift code then the remaining money then there on it?

If I entered the code with the netflix gift code then the remaining money then there on it?

How now how should there be something on it all depends on your Netflix account

I want to buy me for $ 8 in the coupon code costs 15 $

Well then you can use it for 2 months at least almost because if you do not cancel before withdraw the remaining money and extend it