I deserve this holiday

We are in the 3days holiday from today. I think I deserve this!!

Because Ive been working hard again from July, because I was transfered from Purchasing dpt to operation dpt which all the incoming order and complaints come... And I have got 3 subordinates,,,
My work gets double and longer working time as before
but the salary is same,,,wtffff

I complained this situation but the company said we pay you a manager benefit..
I said to them, this benefit has been in my salary from ages ago, maybe from 2nd year even I didnt have any subordinate! And they say nothing, they say this is the manager benefit..

I didnt say to them but this manager benefit is only 15000yen, 150bucks... Ive been working over time more than 20 hours normally, so my salary per hour is 700yen>?
Nobody call this manager benefit, we call this manager loss or company abuse...

My motivation is now negative 100%, If I dont get a pay rise next year, I might change the job.

Do you guys know any job for me?