What's up with this jiyza?

Because my dad stated that he disagrees with the jiyza (are you allowed to disagree with Allah?).
Jiyza, the taxing of non muslims in a muslim country.

Why does Allah tells us to do this?

السلام عليكم و رحمة الله و بركاته

Every country has a specific way of taxing their citizens.
In an Islaamic state Muslims contribute by paying zakaat and non Muslims contribute by paying jizya.

As far as your father is concerned try and explain to him diplomatically. Should he refuse to accept, avoid the topic and make duaa for him. Under no circumstances should you rebuke or address your dad in an unbecoming tone.

Jazakallah khair

Request duaas

Aaqib, Why am I, a Muslim, being taxed in England? ask your father that

Scimi