Half Day - company deducted my half day salary - if this is a law in Uttar Pradesh?

Dear Sir, I work in a private firm in Uttar Pradesh and my office timing is 10:00 am to 6:30 pm. I went for 2:30 hours from 10:00 am to 12:30 pm due to personal work, company deducted my half day salary and told me it would treated as half day. Could you please explain if this is a law in uttar pradesh ?
Second thing, I have joined this company on 25th May 2018 and it's been 1 month. I have applied for a leave and asked for the provision. They told me you will be entitled for a leave after one year from the joining date and your salary will be deducted for one leave.
Please explain ?

You have not specified the nature of your firm. However assuming it to be covered under the UP Shop & Establishment Act 1962 and as per Section 10(3) there is no qualifying service prescribed for getting 10 days casual leave in a calendar year