Poor Service/Lack of Communication

Courierit collected parcels from my company on the 19th February 2021, which I booked as an economy delivery, so I would've been satisfied if delivery took place today, or even tomorrow, but to my dismay, after several follow ups with customer care, I was just told that delivery will only take place on the 1st March, which I find completely unacceptable, as this information was never communicated me. I even made a note (special instructions) to say that delivery to take place on Monday because its being delivered to a Mine, and no one had the decency to reply and say that they only do deliveries to that area once a week. I would never have used CourierIT if I knew this. It is imperative that the parcels get delivered this week still, as I have a client who is waiting to receive their goods. I have been dealing with a lady on the Courierit customer care line by the name of Donnay. I have aired my dissatisfaction that I am expected to resolve this issue, by making numerous following up calls, after being told that I would be called back to advise on the status of the delivery. The last call to Donnay, I was also told to call *** and the person that I got transferred to was unavailable. I am not happy with the fact that I have to resolve this issue myself. Please can we get this matter resolved ASAP. Thanks