R1000 VOUCHER NOT RECEIVED

I opened a cheque's account at the end of October whilst Discovery ran a promotion. If you spend R1000 before the end of November. I will receive a R1000 voucher for my preferred spend partner. Which was Woolworths. I have have made 6 calls. Sent an email to the complaints department and I still have had no joy. It's an absolute disgrace that I have to go to these lengths to hold Discovery accountable for promises that that can not keep. I want my voucher as I a met the requirements. Discover you need to answer for this disgraceful manner that a cooperation as yourself run your business