Worst courier company ever

Have had the WORST experience with this "courier" company. I ordered a package online - It was a "black Friday delivery special" There was a section where you could complete any special instructions. I work at a school, so I put that I need it delivered before 14:00 or delivery address changes. On day 3 (Economy class says 1 - 3 days) I saw the package was out for delivery. So, I called and asked if the package will be delivered before 2. The lady assured me that she has added the notes and it will be. Then at 13:40, I called in to find out how far the package was - I reached the same lady as previously. She told me to please hold, she will find out. After 18 minutes on line, I put the phone down. It took me over 15 minutes to get to speak to ANYONE. I was met with a rude lady (Tinswalo) who told me no such special instruction is on this package and as it is economy it only leave the hub between 13:00 and 14:00. I told her that I had specially put that note on for a reason - to which she informed me that IF i change delivery address, they will only deliver that parcel to the new delivery address in 24 - 48 hours. I requested to speak to a manager - eventually she just hung up on me. I called again and spoke to Colin - who was even ruder than the last person I had just spoken to. He told me "if I wanted to get a package delivered at a specific time, I should have paid for it" and "they are well with economy SLA" - He was just so arrogant - At 15:00 I received a call from the DSV Driver - He asked if he could come deliver the package - I asked him if he saw the delivery time I requested - he said Yes, that is why I'm calling. I asked if he was at the school, else then I could meet him there - He told me he was in Auckland park, so can't give an exact time he will get to the school. I asked him how we can fix this, and he promptly hung up on me mid sentence. I do rescue work for cats and kittens, I had ordered fencing to build cages for my rescues. At the end of the day, we are now day 4. And, I still do not know when I will receive my parcel. I'm sorry to say. But this is a company I will never recommend