Pick n Pay Ferndale refuses to give me pensioner's discount

I went to Pick n Pay at Ferndale on Republic on Wednesday 14 October and they refused to give me pensioners discount.. the supervisor first said they do not do it any more as there is a new manager. I showed my Pensioners card then she said they only take Pick n Pay Pensioners cards. I asked for a form to fill in to apply for such a card, then she said they do not have such a form and it will instead go through my Pick n Pay shoppers card. I pointed out that the Pick n Pay shoppers card helps when there are specials but the pensioners discount is something else. she then said the pick n pay shoppers card only works on a Wednesday at their Pick n Pay because the new manager decided that. I went to see a manager which I was not sure if that was the main manager as he did not provide me with his name. When I asked him he said the Pick n Pay shoppers card only work from Monday to Friday. He proceeded to say they do not do pensioner's discount only on a Wednesday. This was all happening on a Wednesday. These are all contradicting stories and sounds like nobody knows what exactly is going on in their shop as well as them wanting to do their business differently to what Pick n Pay as a company promises their policy to be. I see they have all these awards exhibited on the manager's counter, what did they get that for if they treat their clients this way? They all had different stories as to why they avoid giving pensioner's discount. I regularly go to other Pick n Pay branches and have never been told all this, my Pick n Pay shoppers card is accepted there as well as my pensioner's status and discount.