Terrible customer service at Makro woodmead

I bought 5 vouchers from vodacom app for Makro. Then went to Makro to buy my grocery. When o got to the tills i asked the cashier if i could use multiple vouchers. He said yes. When he captired ny one voucher it worked and when entering the second one the system did not allow him. He then called for his supervisor to come assist. We waited there probably 10-15 minutes waiting for the supervisor. When she gets there she tried all she could but did not fimd a solution. She then told me she cant assist me so o asked her to call someone superior to her maybe that person will have a solution. She then called Lindiwe Mohlala the spoke sometime on the phone amd then lindiwe came to the tills. With so much attitude she told me i need to have 5 Makro cards(which to me is impossible since its one card per user). When i told her i do not have 5 cards she said i should ask my friends. So. I showed her where i bought the vouchers and she rudely told me i was supposed to go to makro website to read the terms and conditions of using vouchers at Makro. Is thet even logical? Im honestly so annoyed with Makro and the customer service i received today. Utterly disgusted!!!!