BAD CUSTOMER SERVICE

I never had an issue with Wiki deals before nor the vouchers. Going to Limno's yesterday was awful. The cashier was not reasonable at all not wanting to help as the print out was not the way she wanted it to be. Tried explaining that the voucher number is failed an that's what she needed. But she wasn't interested an kept brushing me off. After requesting a manger to lay a complaint she then wanted to help saying I don't have to complain. Which annoyed me. Y now only do u want to help? Why couldn't you help in the first place? I wanted to leave every an walk out as I couldn't deal with an *********** idiot. She then said I will exchange ur voucher I don't know why u want to complain about me. Yes I understand she was trying to do her job an she would have to pay for the voucher if the code wasn't listed. I bought way more cake than she expected an paid the difference to think she almost let a customer walk out the door unhappy is disappointing