Terrible Service at Burger King Cape Gate Lifestyle Centre

I ordered a meal with a Milkshake and instead of a Milkshake they gave me a tin of fizzy juice. I accepted it as to not create a scene and was explained the reason for the fizzy drink was because their milkshake machine is broken and they already charged me the extra for a Milkshake. 3 days later I returned and was informed the machine is still broken and I asked them to arrange a repair or put up a sign to state no milkshakes available as I drive a distance to get to this outlet and after waiting in a queue I am disappointed. The next day I went back to this outlet and the machine was still broken after waiting 30min in the queue. I reported it to clientcare and it was fixed for a short while. Monday after a wait for my order, they again charged for a Milkshake and later informed me the machine is broken. This was the 4th time in 10 days. They accept payment for milkshakes and after waiting for the order, they inform the machine is broken and try and replace a Milkshake with a gas cool drink. No signs are displayed stating they cannot make Milkshakes. A sign would allow me the choice up front just to keep past as I specifically get a meal there for the Milkshake. This outlet has also on 2 occasions been terribly filthy with sauces all over the counter and food and spilt drinks all over the floor. My shoe actually stuck to the floor. On that occasion I complained to the manager who simply made the excuse that they were busy and did not habe time to clean yet. After telling him that I will report it to the health inspector as they are preparing food, he got somebody to clean. Service at this outlet is horrible at best, but we do eat a lot of Burger King and this is the closest outlet to us.