When I arrived at the car rental company's reception, the female staff member had a very bad attitude. She asked me to send the company confirmation email to her. Since I had just arrived in Thailand and couldn't connect to the internet, I explained my situation to her. However, she got angry and told me she wouldn't give me the car. As I had two young children with me and urgently needed the car, I asked her for help to use the computer to print out the email. Shockingly, she swore at me in English, saying 'FUCK YOU'. I didn't argue with her in front of my kids, but I was very disappointed and embarrassed by such unprofessional behavior. I hope I can get an explanation for this incident. Thanks.