Funny by me they bought Berco, and in general they are a reasonable courier, though there are cheaper ones, like TheCourierGuy and BOBshop, who can offer a slightly cheaper service, but they are also the backbone of a good number of other delivery companies as well, and they tend to be reasonable with on time and correct delivery, though that is more because no courier here will drop off a parcel without acceptance, as they would have close to 100% loss rate. Used them for many years, before the Aramex rebrand, and they are pretty good in certain areas, and not so good elsewhere, simply because of the far side second courier that are used. But at least are reasonable for international, so they are used instead of the other 2, Fedex or DHL, as those are much more focused on business to business, instead of customer side. They also are one of the 3 that Amazon uses for delivery, seeing as Mr Delivery is now owned by the incumbent Takealot, the competition to Amazon, and having a lead in market acceptance, plus they do all the fast food deliveries that Uber does not do.
Last but not least do not ever use SAPO, bankrupt, 6 months minimum time for a letter in the same post office, and they live up to their motto, "We deliver, whatever we do not take", and parcels are often stuck in limbo for up to 3 years waiting clearance at the only customs entry point, before vanishing into a pile at one of the depots. Even the Speed Services side (supposed to be up to a 3 working day delay at most counter to counter) will lose things, take months to deliver, and will often send a post card to you (with that 6 month wait for that to be delivered) about it being at an office, even if you paid for door to door delivery.
Fastest is 60Sixty, who does the home deliveries for Shoprite Checkers, though I have seen a few deliveries that were going to be very delayed, seeing as the driver had been collected by a vehicle, as they ignored traffic lights. Apply at your nearest store, with a false ID, preferably as illegal resident, and with driving ability not needed, on the job training provided by getting on the bike and starting it.