Constant Issues! Terrible Service

Please can someone from The Courier Guy get back to me. I sent a parcel to CPT which was to be delivered overnight. This was on the 26th of May and was suppose to arrive in CPT on the 27th of May. To date (1 June 2020), it has still not arrived. This was for a Takealot order which has now been cancelled and I have from my pocket had to fork out all those cancelled order fees; let alone all the orders I have lost out on due to your incompetence. I have tried calling several different numbers, which I keep receiving from the JHB Head Office, but even those numbers aren't getting answered for the last 4 days. I have been given numbers for Mikael, who is apparently a manager there, and he isn't answering ***) and numbers for Shane and Monique *** and ***) and neither could be bothered to answer their phones either. I have also tried the Cape Town office number and the after hours number and these haven't been answered either. Whether I am going to get a response on this message is a mystery and honestly I will be shocked if I even do. This complaint in in addition to many other issues that I have had with The Courier Guy (ranging from incorrect orders being delivered to clients, orders not being delivered overnight even though I have paid for and booked for this service, refunds outstanding for mixed up orders) but I have actually just reached my limit now. Please can someone get back to me as a matter of urgency!