Delivery allegedly signed for but not delivered

I am tracking my order ***5 today on the App and it says I received it at 12:44 today! It’s 17:34 and no one from Takealot has been here yet today. I am in an Estate and have cameras up, so I can see that no one has come today or has been near my property. The Takealot contact number rings and says they are open till 19:00 but don’t answer the phone. Very unhappy at this point as there is no one to assist me