Work place bullying?

So ever since I started working I have been blamed for mistakes that occur at my workplace by my boss and coworker. You see I remember every mistake I make so I learn from them so I know I didn’t do the ones I was accused of and also they make me work only when we have stock and be in the back after having a whole speech about taking turns doing stock in the back so I made no sale at all for the times I have worked last week and this current week.

My father thinks they are bullying me by blaming me constantly and making me have no sales so I get paid very little. Actually less than a student get paid from a. Part time job.

Btw I work with shoes.