Horrible service

I was contacted by the GFS driver on 21.05.26 @ 16:30 the evening. I told the driver(Courage) that the business was only opened until 5pm, but waited until 17:15. The next morning I phoned the driver to ask about the delivery and he told me that he's busy and i have to wait until the following week. i told him that that was unacceptable . I contacted customer service who was going to escalate the issue. The following week on the 25th, I phoned the driver who again said, that he will see how he feels and dismissed my call. So i called customer service again who was going to escalate my concern. By 26th i still received nothing, so i called customer service, where the lady told me that there is nothing she can do except to escalate the issue. I asked to speak to a manager, where she told me that they weren't taking calls and that the customer service team was not allowed to contact the drivers and i had to wait as the driver could deliver anytime between 8am an 6pm. She also dismissed my call as she made it clear that she needed to log off and could not assist me. On the 27th i contacted customer service 3 times. I spoke to Buhle 1st, who was going to escalate the call and i was dismissed, then i spoke to Monique, who also dismissed my call and with the 3rd call, Nondo, dismissed my call almost immediately. I need to know what other procedure there is available to the client to get answers as the current system GFS is using, is not working at all