Extremely Poor Service - UPS Express

I selected a "3 to 4" business day UPS Express delivery service to courier a box from the UK to SA, for my business, paying a bit more for "quicker service". I am aware that our sub-standard Customs Dept (and sub-standard Port Health Dept) add 3 days to the supply chain - their Work From Home is atrocious. Despite the 3 business days taken by customs UPS Express has now taken UPS Express an additional 6 business days and the parcel has not even arrived in Durban. Comms with UPS Express, either email or phone, is also shocking. They do not reply without repeated requests (other than their auto emails, which for the most part don't assist in getting things moving). I used to rely on the SA Post Office for bringing in foreign parts for my business until they irreparably broke down. Now UPS Express as well, it seems.