Hello,
Unpaid leave is no-pay leave. Can deduct daily wage for each non-attendance day, for unapproved leaves, including emergency leave, if annual leave is exhausted.

How to calculate daily wage... monthly (basic) salary divided by 26 days.

Non attendance for 2 straight days... it's valid reason for job termination. When employee turns up to work on 3rd day, you keep the punch card, employee goes to the office to find/enquire missing punch card, you ask what (valid and reasonable) answers he got.

If not to your satisfaction, straight on the spot give him his salary for each attendance day this month and tell him he is fired.