Not receiveing my Takealot voucher for upgrading

I upgraded my contract at and MTN West Coast Mall store on the 5th September and was a supposed to receive a Take-a-lot voucher with my Samsung A70, consultant gave me the pages on how to redeem the voucher. When I sent the IMEI number, it said it is incorrect I must try again. I triple checked it and it was correct, the consultant told me that I should try again, then I sent it again and the sms I got back said that it had already been redeemed, but it had never come through to me. I have emailed her on the : 6, 9, 11, 16, 26 September and today 1 October, and the response I keep getting is that she is following up but receiving no response, she said the Samsung rep is not getting back to her. This is really PATHETIC, how hard is it to get a voucher? Now she says that it is through Samsung, but it is a promotion that MTN is offering. Is everyone just too *********** to resolve this???