No leaves for workers in Ideal

My mom works in ideal factory near the heart of city. Since 3-5 years, she hasn't got a weekly leave. She has to work on Sundays because on sundays they dont let anyone take leaves. There is one day off weekly from Monday till Saturday but most of the times the employer cancels it because of rush ( customers). Since 3 years, my mom is working every single day. Never taken a leave. Now the question is does Karnataka industries establishments (National and festival holidays) act 1963 exempt on them. The act gives 10 minimum holidays per year. Is Ideal exempt from this act. And if isn't , why hasn't someone complained about it to labour officer.