Makro - Where ************** replaces store policies

I received a voucher recently from Makro after returning some goods. Went to your Ottery store today however the voucher was in the wife's car. I had my ID, Makro card on me, and asked the wife to send me pictures of the card. I then headed to your returns/customer service only to be told they not sure if I can purchase I need to speak to a till supervisor. Chatted to a " Ms Rogers" who was a bit shocked returns sent me there and I was told to go back to the returns desk as they deal with these things, but the supervisor indicated it can be cancelled and a new voucher or number can be given her colleague in audio visual agreed. I went back to returns only to be told a store supervisor (Elona or Elorna), "is not comfortable" doing it. I asked them if its a set policy no reply, I was only told that despite having the credit number, my Makro card they need the physical piece of paper in the store just like before the age of computers. I can only deduce I was unfairly discriminated against by the store supervisor and a different "type" of customer might have a different experience. I also asked returns what would happen if I lost the voucher would I then lose the monies owing to me or if a complete stranger found the voucher somewhere, came in store to purchase if it will be allowed, I received a yes from 1 staff while other staff just kept quiet. Shocking that in 2018 Marko cannot account for human error by using technology, even more scary is that a store supervisor is allowed to judge and there is ignorance across departments on store policies.