TELLER DOESNT LISTEN AND THEN STILL ARGUES

My husband and i made a purchase today at 12.27pm teller id ***2 operator number ***1, everything went fine until my husband wanted to pay , he clearly told the lady to put the transaction over 36mths on his RCS card , she acknowledged what he wanted and then proceeded , to complete the transaction without putting the transaction over the stated mths. when my husband asked her ,she was rude and argued with him that it did not give the option , which is a lie as he saw it come up. she carried on arguing with him , by this time i wanted to call the manager but my husband was too upset by her attitude and the fact that there was a que behind us, he didnt want to make a scene, we are very good customers of game and do purchasing there every week , so i dont think it should be an issue to expect to get decent service.we are very upset by this experience , and although i dont have her name , i hope the id and operator number will be sufficient, she needs to have training on how to deal with customers and using the systems .