Bogus WW refund policy - don't be fooled there is no peace of mind when buying at WW.

I purchase two items on their braai promotion. The Promotion was on the app, on a sign as you walk in the food area, and other media. I purchased the products which had stickers on them stating 20% of on purchase of two. On the Shelf it had a red shelf price indicating exactly the same. It was everywhere. These itesm where purchase towards end of promotion on the 3rd day. They were scanned and the promotion never went off. I mentioned to the teller that it was not rung correctly, disagreed but once I said let me pay , I will get the slip and just take it up with the supervisor, she saw it was incorrect and supervisor came over and rung it as it should have been as per promotion. My points are several. Firstly - this was the 3rd day, how many clients were dupped and overpaid. Secondly, there is now way I was the only client to pick this up, which leads to the conclusion that knowingly this was not addressed and carried on overcharging a well advertised promotion. I know that no action was taken after I left. Lastly complained to WW, but what i got was that the refund policy of WW only applies ro SHELF PRICE AND NOT PROMOTIONAL ITEMS. My Question is what is shelf price. I would have thought the price on the shelf is the shelf price, but apparently not. So if 6 Packs of milk are advertise from R110 to R 94.00 on the shelf, that is not a shelf price. Very interesting and ambiguous. So its only shelf price if its a non discounted price, if the shelf displays a discounted price then there is no shelf price as that is only price on the shelf. Maybe WW should change their policy and rather state that refunds are only given on overcharging on full price items. If its discounted items then its Oh Well!! Damn we over charged sorry you caught us out. But don't worry we have a refund policy - oops doesnt apply to you.