Bad srevice

I had an American express card which could not be used so I asked the person behind the counter if I could use his computer to transfer money to my other account so I can get gas and he refused. I struggled with internet on my mobile and couldn't log on to the bank. I asked if he is ok to let go of R1700 and he said yes. Why this arrogant attitude? Surely it's not his business since he gets a salary no matter how many or less sales he makes.