No feedback and No Voucher despite promises

18th Nov I received an email from Lauren Hinckley about a nutrition survey, saying: \The survey will take on average 5 minutes to complete. If you complete the survey you will receive a R100 Pick 'n Pay shopping voucher. "<br> <br> I completed the survey on 18th Nov. No voucher. I queried with Lauren via email on 18th. She rep**** on the 20th Nov \""You will receive an SMS containing your Pick n Pay voucher when the survey closes in approximately 10 days.\"".<br> <br> It is now 20 days from that email. No voucher has been sent.<br> <br> Lauren is not replying to emails. I have repeatedly tried to engage with Discover on twitter. I was ignored on the 7th and the 8th of Dec. On the 9th Dec finally got a reply tweet asking me for DM details. I supp**** details via DM and was told on the 9th Dec \""We are following this up for you and will be in contact shortly\"".<br> <br> No further reply from anyone via email or twitter. If you cannot supply the voucher"