为什么我付出了得不到回报？译成英语，要求口译，其它免了

Why haven't I got any reward even after I've given much?

Why did I get nothing in return for all I've done?

Why I can't get corresponding payment?
Why the gains were not equal to pains?

why i give and give and there's no reture.或者
Why i get nothing by giving/efforts.

Why have I got nothing after I had given more?

My efforts never get rewarded，why？