Vitality reward vouchers

Discovery vitality app has technical issues and reward vouchers are not being delivered, I emailed vitality on the 08 March in regards to the matter and received an email on the 09 March that there is a technical issue on the discovery app and that's why I do not receive my vouchers, discovery advised that they can sms it to me , I sent an email with my cell number I got an email on Friday that my vouchers will be sent in 2 working days, today Tuesday I follow up and get an email that it will now take a further 3 to 5 days to receive my reward vouchers in the mean time my vouchers expire every week and I am losing rewards<br> <br> I don't mind the vouchers lost last week but would like to receive my 2 vouchers this week before they expire on the 16 March if they do expire I would like vitality to send me 2 vouchers in their place as I have worked for those vouchers and lost them out of no fault of my own, as you raise complaints and discovery take too long to lodge complaints or answer complaints and are slow and inefficient