INVALID VOUCHERS AND DISGUSTING SERVICE FROM SEADOONE BRANCH

I have VIP status on your WRewards. I not receive my quarterly vouchers and emailed your customer services. Sharmaine helped me and send me the vouchers via sms only to find out TODAY that your vouchers have been already used and then invalid. How is this possible as I did not use the vouchers? Your manager at the Seadoone, Amanzimtoti branch, namely Denzil and Eric are absolutely useless. Both of them have no customer service empathy and are extremely rude and arrogant. I wasted 1/2 an hour whilst they 'tried to call customer services' at 17h30 today. These invalid vouchers expire on the 17/11/18. I do not want a copy and paste answer. 1. I want someone to advise how an invalid voucher can be issued. 2. I want my vouchers extended by another month. 3. I want my vouchers emailed to me. Extremely unhappy with the lack of service and false promises from Woolworths. Why have a loyalty programme when you can't live up to the promise?