Will refusing to work on my scheduled day off get me fired?

Unfortunately, probably.

Yes it can

If it is your day off & they contact you wanting you to work , you do NOT need to go into work ,& they have cannot pressure or threaten you in anyway , as THEY ARE breaking employment laws .

It might. It depends on your boss, your employer's policies, and what kind of worker you are.

It could yes.

probably with the bullying by companies