Checkers door to door is a lie, rude aggressive drivers demand pensioner collect her own groceries

The driver demanded my pensioner mother help him carry the groceries. He said they are too many. Every month checkers drivers complain and demand my mother must come down and help them carry. Or they refuse to take the groceries to her door. Why are you offering door to door if it is actually not that. Every month we must deal with rudeness and agression from your drivers and laziness. Yet when there is that old man that comes he never complains. But all the others complain and get rude and aggressive. Do they know the unemployment rate in SA. I am disgusted and have raised this matter with you before yet nothing has happened.