McDonald's doesn't have lime mcflurry's yet they're broadly and openly advertised.

We visited McDonald's raisethorpe branch in pietermaritzburg on the 7th of Jan 2019 and they had the lime and chocolate mcflurry advertised on the boards, when we tried to order it the person taking our order said it was out of stock. When we called the manager she said they can give us lime milk shakes but not mcflurrys because they don't have them and I don't understand why the product is being so broadly advertised but this branch never has the product available for purchase.

It's becoming very annoying because this is the third time it has happened.