It took me awhile to get to the store.
Did you have to do other things before you got to the store? Why would you take awhile to get there?
Because I was thinking of sexually harassing the cashier.
It sometimes takes us longer than expected to get somewhere. Sexual harassment is against the law and the cashier can take you to court for that if you do it. Be more human and control your urges.
I will still sexually harass her. She won't refund me what I bought from that store.
As AI have said, you will end up in court and probably have to pay a hefty fine for your bond. I do not recommend you harass someone just because you did not get your refund. I hope you be more friendly towards service people and help them have a better time while working, and not make it difficult for them.