Worst experience ever

I did my diploma with Rosebank College back in 2016 I never had issues with them until I graduated in 2019 I decided to do my BBA degree with them and that was the worst mistake of my life I regret everyday I've wasted my money and my time. I'm only left with six modules to compete my degree and earlier this year I decided to take a break since I was busy with a lot of things and I didn't have time, second semester that's when I decided to register for four modules I went to braamfontain rc campus so that the online admin department can help me with the registration since there's new registration system and I've never used it before I went to the campus at least three times, the first time I went the person who was helping me uploaded three modules on "stasy" that's what they call it and the fourth module was not on the system he then emailed the IT department for assistance and they couldn't find it on upload it also. I went to the campus again on the 29th of July that was the last day of registration when I got there the system was down and the guy who was assisting was not there, I then asked this other admin lady what must I do since it's a closing day? She said as long as the modules are uploaded then I shouldn't worry She advised me to pay registration fee of which is R3400 and I paid it. Following week I kept on doing follow up sending emails and no one was responding or getting back to me, I log in queries and they have never been resolved, I then emailed the financial department requesting for refund. Few days back I emailed the program success tutor that's when I was told that the modules that have been uploaded they are wrong modules, I sent them an email asking them what is the way forward and they didn't reply me even now, I've been sending emails since the first week of August up until today, I matter that could have been resolved so easily. So I just want them to cancel those modules and refund me my R3400 this is a lot of money that I've worked hard for. And they are trying to blame me for those wrong modules that are uploaded on the student portal whilst it is their admin who made a mistake. Studying with Rosebank College it has been nothing but a nightmare I can't wait to complete this degree, this college have put me through too much stress I don't even enjoy doing this degree and worse part is that I don't know where to report them.