The information given by the central admin and at the counter is very different. It made me waste time going back and forth. The WA admin from the center said that I could not use 2 vouchers in 1 day. It had to be on the next day. Even though the date I made the appointment was not on the same day when I ordered the treatment or haircut. Well, when I arrived at the salon, the cashier said that 2 different vouchers could be used. Because I also took the treatment and haircut with different vouchers. That's all, the rest is okay.