Disappointed

I usually have excellent service but there have been 2 times where I have placed an order, everything that I ordered was in stock, and I paid the extra to have it delivered the next day. Checked once paid and tracked the order and it said that everything would be delivered the next day. Checked the app the next day and this had changed and it now said that everything would only be delivered around a week later. Emailed and spoke to someone who said that they would get back to me but no one did. I emailed again and another person said that they would follow up and get back to me. He did saying that everything would be delivered in a weeks time. I told him that this was not acceptable and he said that he would escalate this. Why was this not escalated when I placed the first call air sent the first email? Agent mailed and said that item was scheduled for delivery a week later, I could see on the app that the item was at the courier facility so I asked why it could not be delivered sooner? Anyway, eventually got them to deliver it to me the following day, which was already a day late. As this has happened twice, I would be wary of ordering anything that I need urgently from Takealot.