Family Dollar complaint: Personal Space

This is a problem I have been having at this store for some time now. Although this is my second complaint, its happened many times. It’s the problem of personal space especially when entering personal information from my debit card. Yesterday evening a guy was behind me and I could feel him inching closer behind me as I approached the register. So what I did was stand on the outermost edge of the counter so he could not place his items there while I was checking out. As I moved to enter my pin, he places his items on the counter. I hurriedly finished my transaction, but I was upset. He didn’t even let me finish before he was walking up to make his and of course none of the cashiers said anything. Now, I could have said something, but it would not have been nice and who knows how that would have turned out. This beginning to be too much. Something needs to be done about this.