Complaint

I bought something off takealot around the 7th of Feb 2020. The item was paid and everything was cleared very quickly and the delivery date was 11th of Feb 2020 which was good as I needed the item on that date. Then I got a message on the 11th saying that the recipient was not available for collection but no one came to the place I was staying so that got me wondering as to what happened. Then I got a message saying they will deliver it on the 12th and them 10 minutes later was told it's going to be delivered on the 13th. So I tried to get hold of anyone from takealot which is a big mission as the phone number does nothing and emails was the only way I could get hold of someone but it took forever for a response. I've sent a new email and still waiting for a response... They have changed the delivery to the 18th of Feb which is 7 days later. My question that I have is how the hell they can get it right to take so long to deliver something. On the app it kept saying that the parcel was taken to the wrong courier and it waiting for a new courier company. Would love for takealot to give me answers.