This happens in many telemarketing companies. They tend to deduct salaries of employees who work in those companies. They never pay them a fair amount of money in the first place and the worst part is that they pay late as well. So, the place where you work matters a lot.
It's pure wickedness of those businesses like telemarketing companies. A worker will put in everything they have in the job but they will still end up cutting their pay for some silly and useless reasons. It's a bad way to treat workers.