Fastway Couriers - No Customoer Service

I have ordered two parcels from Temu in China. According to the tracking system on Temu the one parcel landed in Johannesburg and was routed via Fastway Couriers. The other landed after the 1st and was routed via Buffalo Couriers. Today is Wednesday, The 1st parcel - Fastway is still sitting in Pretoria in Northbay 1. The 2nd parcle - Buffalo, was delivered yesterday. Trying to get hold of an agent on Fastway whatsapp chat is almost impossible, today, after an hour of waiting I just gave up. Now, after complaining to Temu, I get an email from Fastway stating that I am in a "grey" are and delivery will only take place on Friday. On Monday, after waiting an hour, an agent told me "tomorrow but latest Thursday"