Faulty Nando's Voucher System

I had a Nando's voucher loaded on my cell number it initially reflected the credits fine online. On the day I wanted to use it, and proceeded to the payment section of my online order, it did not reflect any longer. I checked the credits again and it reflected as redeemed even though I had not redeemed it as yet. Just minutes before that, it was available for use then disappeared.

I had logged a call on the day it took place after paying full price for the order. It's 20 days later now after no feedback from calls, emails and Facebook messages.

It's such a simple matter to check the voucher number, see that it was not redeemed anywhere, yet reflecting as redeemed. And refund the credits accordingly.

Yet it's 20 days later and counting. . .

We usually by vouchers for our teams at a large company on a regular basis and will definitely be looking to support other businesses instead of Nando's from now on.