My parcel was mis routed for a week

I'm not happy about the courier guy. On the 25th of January my parcels were collected and 2 of them were mis routed. One was for Vosloorus and the customer called to make me aware that her parcel was mis routed however they promised to deliver on Monday and definitely the parcel was delivered. Now my problem is with the other one, no one informed me about it. So normally when courier collect the parcels most of them are delivered the next day which is excellent so to my surprise on Friday I didn't receive any emailing regarding this particular parcel.

So on Monday the 29th I send an email to find out what happened to my parcel I was told that expected delivery will be on the 31st latest on the 1st of Feb. Then I asked how so because I ve been with you guys for years and you have never delivered my parcels after few days why now, then I was told that is expected delivery date, ohk cool. On the 30th I have send the courier guy email to find out if my parcel will be delivered the next day that's when I was told that my parcel was mis routed, today is the 1st of February I don't know if my customer will ever receive her parcel because when I ask what's happening, when will the parcel be delivered the answers that I m getting are not satisfactory at all because I'm told that the parcel will be delivered if at Vryburg kiosk we receive it on time and there are no delays. I mean do they even have my parcel? And the question I'm asking myself is if the parcel is still in Johannesburg why Vryburg Kiosk is responding because Johannesburg should be the one to tell if the parcel will be delivered tomorrow or not and again if the parcel is in Johannesburg what could cause the delay for them to send it to Vryburg Kiosk tonight so that it can be delivered tomorrow?

So it's been a week my customers has not received their parcel yet. How do you mis route the parcel courier guy? Ohk fine even if you did why are you not transparent to your clients? I'm not happy at all because the more you delay to deliver the parcel, I'm going to struggle to get payment from my customers.(waybill number RC43PG)