The Courier Guy

I'm at my wits end. How difficult is it to courier a package of mine from Nelspruit to Cape Town. On the 17 February 2023 I booked a locker in Nelspruit. After 30min I've realized I made a mistake and had to make that point my drop off point and not the pick up point. I've contacted the courier guy and they informed me that no my application on the app is correct and I don't need to worry. When my guy in Nelspruit wanted to deposit my item at the locker the code didn't work. I foned the courier guy and another consultant picked up and she informed me it should indeed have been my drop off point. Needless to say I had to book and pay all over again. On the 23 February 2023 my guy deposited the item in the locker. As per the courier guy there is nothing in the locker. I've informed the courier guy that there is indeed an item in the locker ( memory stick) and they must check correctly. This was on Friday 24 February. The courier service informed me that their guy will pick up the item from locker that same day. On Monday 27 February I contacted the courier guy again to confirm if pick were made by them. I then got told that they only pick up on a Monday and Wednesday at that lockers so they would pick it up that evening. I foned this morning again to confirm if pick up were made and they said no. I don't know what to do anymore as I get shifted from pillar to post. Everbody just tells me later during the day they will pick it up or the next day. We going to the second week now. I need the info on that memory stick as it's information for my business. I'm loosing money eish. I'm sure they gonna charge me again now for their negligence.