Dsv being unprofessional

I've been getting the run around from the Durban branch regarding my package since before Christmas, I called dsv Durban last week and I was told that someone would call me on Monday 3rd January 2022 to arrange a time for them to deliver, I didn't receive the call so I had to call Johannesburg back and on Monday because the durban branch didn't pick up the phone, I was promised that my package would be delivered by Tuesday 4th January 2022 between 12 and 2pm, I had to call Johannesburg again because I couldn't get the Durban branch to answer the phones again, now I was told that my package was sent with the wrong driver so I would have to wait another day for my delivery, this is absolutely wrong, I cannot be putting all my plans on hold and take another day off just because dsv Durban can't keep up to their word, I cannot accept the delivery during office hours because I don't work out of an office, I'm on the road most of the day and I travel very far, please advise me if my delivery would be done by tomorrow or would I be taking another day off for nothing or should I just cancel my order from mtn?