Fastway Durban - Poor communication from them and a delayed delivery that still hasn't been delivered.

On the 17th March 2021, I left a parcel with my local courier company (in Johannesburg, Gauteng) to be sent to a customer in Nkwazi, KwaDukuza Area, Durban. The parcel arrived at the Fastway Depot in Durban on the 19th March 2021. When I used their website to track the parcel, it showed an error for delivery on the 26th March 2021 (7 days after it arrived at that depot). To date, the parcel still hasn't been delivered to my customer (today is the 1st April 2021). I sent the depot an email to better understand what the error was with the delivery, I has still not received any communication from them. I sent the details required for the delivery to my customer, including the pin location with her coordinates in addition to the written physical address. I think the amount of time it is taking to have the parcel delivered is unreasonable, together with the lack of communication, feedback, or any response at all from the Fastway Depot. I do not know where to go from here.

Today the online tracking facility states that the parcel will only be delivered by next Thursday (8th April - 4 weeks from the day I sent the parcel off). I feel this is completely unacceptable, it is not fair on the customer to wait that long for a delivery which should've been delivered within 2 weeks. There was a deadline for this parcel to be delivered, which has now been surpassed.