Fed up Employee

What on earth happened to this place i’ve been here just under a year and I don’t think I can do it anymore. We have multiple people quitting every week and we can’t keep staffed and the customers keep getting more and more mean and just horrible. My store is a 12-14k with a staff of 7 and we just get so bombarded that it’s a chore to go in and we can’t keep up with every thing. I don’t want to quit because i’d feel bad but this place is also driving me mad.