Ordered a product from telkom on 29 March 2024 and this was to be delivered in coming days

Ordered a product from telkom on 29 March 2024 and this was to be delivered in coming days. They tried to deliver when I was at work, send a sms to reschedule delivery which I did, then they came the next day at the time I was at work, re-did the reschedule but their website (link) gives error. No clue where my parcel is, today is 8 April 2024 and I called telkom, they said it's with Courier so gave me a reference and number to call. I called the courier IT Johannesburg number but got transferred and was on hold for 5 minutes without any pick up. Let's see what happens. I get deliveries from other companies (like takealot) all the time, and don't have such issues. I'm doubtful when they will deliver, because availability and randomness of their delivery time is a problem