Money to spend, but nobody is here and the manager in charge does not seem interested in helping

Please explain to me why you do not have anybody at your information desk on Sunday morning at 10:27. I need to buy a R2300 gift voucher urgently, and today is the only day I could. Saying the person who should be here resigned with immediate effect is not an excuse and is definitely not my problem. Please come tomorrow is also not the right answer. I cannot come tomorrow. There were two other ladies also needing vouchers The manager in charge does not seem interested in coming to the mall to help. This is not service