I was there to pay using a voucher from kganya group voucher, the cashier by the name of Mulalo Ndou disrespect me by not explaining the why he can't help me with the voucher and in the mean time he is harrassing me to move to other till to exchange vouch

I was there to pay using a voucher from kganya group voucher, the cashier by the name of Mulalo Ndou disrespect me by not explaining the why he can't help me with the voucher and in the mean time he is harrassing me to move to other till to exchange voucher into the gift card. In the mean time Iam 34 weeks pregnant I can't even go up and down because of my condition. O asked him why don't you tell me in a good way because is not the first time coming with this voucher and what your talking about is the first time and others who helped me try to help me without any complaints what's wrong with you because other also help me with no gift card,then he started to insult me that I think I'm to special because Iam pregnant,