Creepy Guy

What is it about retail that makes some men think they can say/do anything they want to female clerks??

I think I actually prefer the not-funny jokes of a sexual nature from the older guy (which stopped after I spoke with him) than the general creepiness of today's guy. He commented on various things without really asking for my help but whenever I tried to go somewhere else, he'd follow me. He also didn't get the concept of (or didn't care about) personal space and STAYING AWAY FROM ME so I took a break far away from the sales floor until he left.

After he checked out, the cashier asked if he needed help out with his large but manageable purchases (WHY DID SHE ASK HIM THAT?). He said yes and requested me. I got halfway to the front and saw that it was him requesting assistance. I asked a male employee to carry the items for him. When the customer saw the male employee, he refused the help. Then he came and found me before he left to get in some more creepiness. Nothing specific that I can point to as "sexual harassment," but he made me uncomfortable in a way that he wouldn't have done to a guy.

I know, there were other people in the parking lot, but he had a foot and hundred pounds on me..........I wasn't going anywhere NEAR his car!

Now occasionally we'll have only women working. Usually not, but sometimes. What would I have done in that case? Told the guy I wasn't able to help him? Had two women walk out with him? Hmmm..........