Disappointing McDonalds

The store says 24 hours!!!!! Yet when my friends and I traveled all the way to Cape Town, we ensured our foreign friends that we could stop by McDonald for a snack. When we arrived at the Long Street McDonalds, the security guard VIOLENTLY told us to ‘****** off’, and when we asked multiple times “WHY”, he eventually (after ignoring us) responded by saying that the staff are changing shift and this would take at least 30 minutes!!! Absolutely not on and our Swedish and Australian friends will no longer support any McDondals again!