Dissatisfied with delivery

I made an order on Takealot and my parcel was to be delivered yesterday on 05/03 before 5pm. A parcel i needed urgently. When it did not arrive i tried to contact them and was told that my parcel was sent to an incorrect courier company.. How does this happen? I wss then told id have to wait another 2-3 days. Today 06/03 i enquired if i could collect it i was told by a takealot agent via email that they did not know where the courier company was located.. How?? How do parcels disappear like that after we make payments? The agent said he would let me know if i can collect once he contacts the couriers. I ma extremely upset as i am being inconvenienced. More so that i might have to collect. This is unacceptable. Takealot does not even have the courtesy to call me and explain