Can company can deny to pay what they offered or mentioned in offer letter.

I want to know that if company had mentioned you will be paid same as basic as bonus.
Can they deny to pay the amount ?
Is there any system of financial year ?
If somebody join in feb. Is he eligible to claim bonus on Diwali ?
With Regards !
Himanshu Sharma.

yes but only for two months. please rephrase your question by mentioning numbers.